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Ensuring the quality of your software solution through testing and QA is crucial for maintaining stability and performance, and for providing a reliable product to your users. However, building an in-house QA team can be costly and difficult. Finding highly skilled QA engineers may also be a challenge, and even the most experienced testers require time to integrate with your current operations. Dedicated software QA teams are the key to ensuring the quality of your software product. Vendors typically offer a comprehensive range of testing services to guarantee the spotless quality, performance, security, and stability of your software. By choosing cost-effective and flexible dedicated QA team services, you can save up to 40% on your initial testing budget. If you decide to hire dedicated remote development team, a dedicated QA team can provide the same level of service as an in-house team. They are fully integrated into all project activities, including daily stand-ups, planning, and retrospective meetings. The dedicated QA team firms customize their services to fit clients' specific needs, including setting up a QA process, creating test documentation, developing a testing strategy, and writing/executing a wide range of tests such as functional, performance, security, compatibility, compliance, accessibility, API and more. An external dedicated QA team can provide valuable insights that may have been overlooked during the development of your project. They thoroughly analyze every aspect of your product, identifying and highlighting areas for improvement. When To Hire A Dedicated QA Team? When you want: to augment your in-house development team with remote testers through a dedicated team model (you don't wish to hire, train, and retain QA staff) or even to mix dedicated team of developers from different vendors to add specific testing expertise; scale your QA team rapidly if you work in a fast-paced and constantly changing industry and the need to expand your team arises unexpectedly; to pause or terminate the partnership whenever your project reaches your desired level of quality; to concentrate on the business and not fully participate in the QA process; to ensure a swift launch for your project and deliver results within the agreed timeframe, because time is just as important as quality to you: with tough competition from industry leaders, every hour counts;  to take advantage of salary gaps, cut operational costs and avoid additional responsibilities such as taxes and payroll; to access top QA expertise and work with specialists who have years of experience in testing and have a proven track record of successfully completing complex QA projects; to get full involvement in your project, which is not impossible with freelance QA engineers who may work on multiple projects simultaneously.   Why Belitsoft’s Dedicated Testing Team At Belitsoft, we offer not only a wide range of software testing services but also can help you hire dedicated developers. To ensure the best outcome for each client, we carefully tailor each QA team to our clients' specific testing needs. Our QA specialists are handpicked based on their appropriate skill set. Expert quality assurance team  Only the most talented candidates are hired, ensuring that each QA engineer working on your project is a proven expert in their field. The team includes highly skilled manual testers, automation QA engineers, QA managers, QA analysts, QC experts, QA architects, and performance engineers who work together to provide exceptional software testing services to our clients. Additionally, if you need a person responsible for designing, implementing, and maintaining the infrastructure and tools needed to support continuous testing and deployment, we can recommend to hire dedicated DevOps engineers from Belitsoft. We offer a diverse pool of specialists with a range of technical skills and industry-specific expertise, including manual and automated testers, security testers, and UX testers across various industries, such as telecom, financial services, eCommerce and more. We also have experience in creating dedicated development teams for big projects. Minimal waiting times Provide us with details about your dedicated software testing team requiremets,  number of testers,  scope of testing services for your software product, and we launch your QA project in just a few days. Seamless blending in with your company's current operations Belitsoft's dedicated QA team easily adapts to inner workflows of our clients. We guarantee effective collaboration with your software developers, project and product managers, and other members of your team to achieve the desired results for you.  Scaling up and down a dedicated quality assurance team Whether you're a startup in need of a small QA team with manual testers, a medium-sized company looking for a mix of manual and automation testing or an enterprise requiring a large and specialized QA team with a focus on automation and continuous integration, we have a solution that fits your needs. We also provide the ability to change the headcount of your team on demand.  We may start with 2-3 specialists for a team of 10 and gradually expand as the project grows. We also offer a QA manager to oversee QA tasks and maximize results. Strong security and legal protection Safety and confidentiality are our top priorities.  With our QA team, you have peace of mind knowing that your confidential information is kept private and your intellectual property rights are fully protected.  Total transparency and easy management  We require minimal supervision that allows you to be as involved as you desire. Expect regular updates on the progress and no surprise changes without prior discussion. You will always receive comprehensive reports on the work's progress, ensuring you stay informed at every step.   Clients can track the team's success through KPIs. Full control can be taken through daily stand-ups, regular status reports, and tailored communication. No unexpected costs You know exactly what you are paying for. We take care of all expenses, including recruting, onboarding, and equipment purchases.   The dedicated team is paid monthly, and the billing sum depends on the team composition, size, and skillset. Creating a Tailored QA Team: A Step-by-Step Process Defining Goals, Needs, and Requirements Our software testing experts thoroughly analyze the project's requirements and determine the ideal team size and composition. Picking Relevant Talents We handpick QA specialists from our pool of candidates whose skills and experience match the project's needs. Holding Interviews The client is free to conduct additional one-on-one interviews with potential team members to ensure the best fit. Quick Onboarding Our recruitment process is efficient and streamlined, allowing us to set up a dedicated QA team within weeks. Integration and Communication Once the legal agreements are in place, our QA team seamlessly integrates into the client's workflow and begins work on the project, with instructions, access to internal systems, and communication channels provided by the client. Effective Management of Dedicated Software Testers Utilize the Right Task Management Tool Choosing a suitable task management tool that promotes instant communication between the QA manager, QA specialists, and the customer is crucial for streamlining the QA process and software testing. Jira is a popular choice among companies for QA tasks and bug tracking. Foster Seamless Collaboration To integrate offshore dedicated development team, including remote testers, into your in-house team,  hold regular team meetings, use collaboration tools, and assign a dedicated point of contact for communication. This will make the remote team feel like a cohesive and productive part of your project. Encourage Early Testing Start testing as soon as a testable component is ready to minimize errors and costs. This is particularly important for security testing, and we offer services to help streamline this process. Types of Dedicated Testing Teams We Provide Manual testing team Manual testing is necessary for small and short-term projects. It verifies new functionality in existing products and identifies areas that can be automated in medium to large projects.   Test automation team Automated software testing saves time and resources, speeds up release cycles, and reduces the risk of human error. It detects critical bugs, eliminating repetitive manual testing.   Web app testing team Web app testing ensures that websites deliver a high-quality, bug-free experience on various browsers and devices. It verifies that the functionality of a web application meets the requirements as intended. Web testing includes checking that the website functions correctly, is easy to navigate for end-users,  performs well, and so on. Having appreciated the professional approach to testing web-based aplications provided by Belitsoft, our clients often entrust the customization of their products to our team. In such cases we help to hire dedicated front-end developers, dedicated backend developers, or full-stack dedicated web development team of a certain level and expertise. Mobile app testing team Mobile app testing ensures that native or hybrid mobile apps function correctly and without bugs on various Android and iOS devices. Testing on real devices may be costly for small organizations, while a cloud-based testing infrastructure allows to use a wide range of devices. If you are thinking of ways to reduce repeated costly to fix mobile app bugs, we invite you to hire dedicated mobile app developers from Belitsoft. API testing team API testing is a method of evaluating the functionality, reliability, performance, and security of an API by sending requests and observing the responses. It allows teams such as developer operations, quality assurance, and development to begin testing the core functionality of an application before the user interface is completed, enabling the early identification and resolution of errors and weaknesses in the build and avoiding costly and time-consuming fixes later in the development process. IoT testing team IoT device testing is crucial to ensure the secure transmission of sensitive information wirelessly before launch. IoT testing detects and fixes defects, ensuring the scalability, modularity, connectivity, and security of the final product.  ERP testing team ERP testing during different stages of implementation can prevent unexpected issues like system crashes during go-live. It also minimizes the number of bugs found post-implementation. Once a defect is resolved in the software, beta testing is performed on the updated version. This allows for gathering user feedback and improving the application's overall user experience. CRM testing team CRM testing is essential before and after the custom software is installed, updated, or upgraded. Proper testing ensures that every component of the system works, and departmental workflow integrations are synchronized. This ultimately leads to a seamless internal experience. Check out how our manual and automated testing cut costs by 40% for Cybersecurity software product company. Find Out More QA Case Studies The dedicated QA team may focus on both automated software testing for checking large amounts of data in the shortest term and manual testing for specific test scenarios. Get a reliable, secure, and high-performance app. Verify the conformance of the application to specifications with the help of our functional testing QA engineers. Hire a dedicated performance testing group to check the stability, scalability, and speed of your app under normal and higher-than-normal traffic conditions. Choose migration testing after legacy migration to compare migrated data with the original one to detect any discrepancies. Be sure that new features function as intended. Use integration testing specialists to check whether a new feature works properly not by itself but as an organic whole with the particular existing features and regression testing experts to validate that adding new functionality doesn't negatively affect the overall app functionality. Enhance user experience. Our usability testing team will find where to improve the UX based on observing your app's real users' behavior. We also provide GUI testing to ensure that user interfaces are implemented as per specifications by checking screens, menus, buttons, icons, and other control points.

Optimize your project with Belitsoft's tailored automation testing services. We help you identify the most efficient automated testing framework for your project and provide hands-on assistance in implementing it. What is Test Automation Framework? In a nutshell, a test automation framework is a set of guidelines for creating and designing test cases. These guidelines usually include various coding standards, data handling methods, object repositories, test results storage, and many other details. The primary goals of applying a test automation framework are: to optimize testing processes, to speed up test creation & maintenance, to boost test reusability. As a result, the testing team’s efficiency grows, developers get accurate reports, and business in general benefits from better quality without increasing expenses. Benefits of a Test Automation Framework According to the authoritative technology learning resource InformIT, a subsidiary of Pearson Education, the world's largest education company, the major benefits of test automation frameworks derive from automating the core testing processes: test data generation; test execution; test results analysis; plus, scalability is worth highlighting from a growing business perspective. 1. Automating test data generation Effective test strategies always involve the acquisition and preparation of test data. If there is not enough input, functional & performance testing can suffer. Conversely, gathering rich test data increases testing quality and flexibility, and reduces maintenance efforts. There are thousands of possible combinations, so manually gathering a production-size database can take several months. Besides, the human factor also makes the procedure error-prone. An automated approach speeds up the process and increases accuracy. The team outlines the requirements, which is the longest part. Then a data generator is used within the framework. This tool models multiple input variants significantly faster than a QA engineer would do. Thus, you speed up the process, minimize errors, and eliminate the tedious part. 2. Automating test execution Manual test execution is exceptionally time-consuming and error-prone. With a proper test automation framework, you can minimize manual intervention. This is what the regular testing process would look like: The QA engineer launches the script. The framework tests the software without human supervision. The results are saved in comprehensive & detailed reports. As a result, the test engineer can focus on other tasks while the tool executes all the scripts. It is also necessary to note that test automation frameworks simplify environment segregation and settings configuration. All these features combined reduce your test time. Sometimes, getting new results might even be a matter of seconds. 3. Test results analysis automation A test automation framework includes a reporting mechanism to maintain test logs. The results are usually very detailed, including every bit of available information. This lets the QA engineer understand how, when, and what went wrong. For example, the framework can show a comparison of the failed and original data with highlighted differences. Additionally, successful tests can be marked green, while processes with errors will be red. This speeds up output analysis and lets the tester focus on the main information. 4. Scalability Most projects constantly grow, so it’s necessary that the testing tools keep up with the pace. Test frameworks can be adapted to support new features and the increased load. If required, QA engineers update the scripts to cover all innovations. The only requirement to keep the process simple is code consistency. This will help the team improve the scripts quickly and flawlessly. Test automation frameworks are particularly strong in front-end testing. With the increasing complexity of web applications and the need for seamless user experiences across various platforms, automation frameworks provide a robust foundation for conducting comprehensive front-end tests. To learn more about front-end testing methodologies, including UI testing, compatibility testing, and performance testing, read our guide on the 'Types of Front-end Testing'. If you are ready to reduce your testing costs, deliver your software faster, and improve its quality, consider outsourcing software testing to our experts with 16+ years of expertise in testing. Types of Automated Testing Frameworks There are six different types of frameworks used in software automation testing. Each comes with its own pros & cons, project compatibility, and architecture. Let’s have a closer look. Linear Automation Framework A linear framework does not require code writing. Instead, QA engineers record all the test steps like navigation or user input to perform an automatic playback. All steps are created sequentially. This type is most suitable for basic testing. Advantages: The fastest way to generate test scripts; The sequential order makes it easy to understand results; Simple addition to existing workflows as most frameworks have preinstalled linear tools. Disadvantages: No reusability, as the data from each test case is hardcoded in scripts; No scalability, as any changes require a complete rebuild of test cases. Modular Based Testing Framework A modular framework involves dividing a tested application into several units checked individually in an isolated environment. QA engineers write separate scripts for each part. Then, the scripts can be combined to build complex test structures covering the whole software. Advantages: Changes in an application only affect separate modules, meaning you won’t have to rewrite all scripts; High reusability rate due to the possibility to apply scripts in different modules; Improved scalability to support new functionality. Disadvantages: Requires some programming skills to build an efficient framework; Using multiple data sets is impossible because data remains hardcoded in scripts. Library Architecture Testing Framework A library architecture framework is a better version of a modular one. It identifies similar tasks in each script to group them by common goals. As a result, your tests are added to a library where they are sorted by functions. Advantages: A high level of modularization leads to increased maintenance cost-efficiency and scalability; Better reusability due to the creation of libraries with common features that can be applied in other projects. Disadvantages: Requires high-level technical expertise to modularize the tasks; The data remains hardcoded, meaning that any changes will require rewriting the scripts; The framework’s increased complexity requires more time to create a script. Data-Driven Framework A data-driven framework allows external data storage by separating it from the script logic. QA engineers mostly use this type when there is a need to test different data with the same logic. There is no hard coding. Thus, you can experiment with various data sets. Advantages: You can execute tests with different data sets because there is no hardcoding; You can test various scenarios by only changing the input, reducing time expenses; The scripts can be adapted for any testing need. Disadvantages: A high level of QA automation expertise is required to decouple the data and logic; Creating a data-driven framework is time-consuming, so it may delay the delivery pipeline. Keyword-Driven Framework A keyword-driven framework is a better version of the data-driven one. The data is still stored externally, but we also use a sheet with keywords associated with various actions. They help the team test an application’s GUI, as we may use labels like “click,” “clicklink,” “login,” and others to understand better the actions applied. Advantages: You can create scripts that are independent of an application; Improved test categorization, flexibility, and reusability; Requires less maintenance in the long run, as all new keywords are automatically updated in test cases. Disadvantages: It is the most complicated framework that is time-consuming and very complex; Requires high-level expertise in QA automation; You will have to update your keyword base constantly to keep up with the growing project. Hybrid Testing Framework A hybrid testing framework is a combination of the previous types. It has no specific rules. Combining different test automation frameworks allows you to get the best features that suit your product’s needs. Advantages: You leverage the strengths and reduce the weaknesses of various frameworks; You get maximum code reusability to suit the project’s needs. Disadvantages: Only an expert in QA automation can get the best out of a hybrid framework. FAQ What are automation testing frameworks? An automation testing framework is a collection of tools and processes for creating & designing test cases. Some of the functions include libraries, test data generators, and reusable scripts. What are the components of an automation framework? The main components of a test automation framework are management tools, testing libraries, equipment, scripts, and qualified QA engineers. The set may vary depending on your project’s state. What is a hybrid framework in test automation? A hybrid framework is one that combines the features of different frameworks. For example, this could be a mix of data-driven and keyword-driven types to simplify the testing process and leverage all advantages. Which framework is best for automation testing? The best test automation frameworks are those that suit your project’s needs. However, multiple QA engineers point out Selenium, WebdriverIO, and Cypress as the most appropriate tools in the majority of cases. TestNG is the latest automation testing framework with multiple positive reviews. How to Choose the Right Test Automation Framework The real mastery in quality assurance is knowing which approach brings the maximum benefits for your product. Consider the following points to understand how to choose an automation framework. 1. Analyze the project requirements You must consider your product’s possible environments, future development plans, and team bandwidth. These points will help you pick the required functionality from each framework. You might even come up with a combination of features to get the best results. 2. Research the market You will need powerful business intelligence to understand which features suit your project best. Analyzing the market will help you determine potential errors, get a user-based view of the application, and find the right mix of framework features. 3. Discuss it with all stakeholders A test automation framework is likely to be used across multiple team members. Therefore, your task is to gather their priorities and necessities to highlight the most important features for your framework. Based on this info, you should choose the most appropriate option. 4. Remember the business goals The task of any test automation framework is to simplify the development process and facilitate bug searches. Your business might have a goal to complete tasks quicker at any cost, reduce financial expenses, or find a balanced and cost-efficient approach. Align the framework strategy with these objectives to make the right choice.

Categories of Tests Proving the reliability of custom software begins and ends with thorough testing. Without it, the quality of any bespoke application simply cannot be guaranteed. Both the clients sponsoring the project and the engineers building it must be able to trust that the software behaves correctly - not just in ideal circumstances but across a range of real-world situations.  To gain that trust, teams rely on three complementary categories of tests. Positive (or smoke) tests demonstrate that the application delivers the expected results when users follow the intended and documented workflows. Negative tests challenge the system with invalid, unexpected, or missing inputs. These tests confirm the application fails safely and protects against misuse. Regression tests rerun previously passing scenarios after any change, whether a bug fix or a new feature. This confirms that new code does not break existing functionality. Together, these types of testing let stakeholders move forward with confidence, knowing the software works when it should, fails safely when it must, and continues to do both as it evolves. Test Cases Every manual test in a custom software project starts as a test case - an algorithm written in plain language so that anyone on the team can execute it without special tools.  Each case is an ordered list of steps describing: the preconditions or inputs the exact user actions the expected result A dedicated QA specialist authors these steps, translating the acceptance criteria found in user stories and the deeper rules codified in the Software Requirements Specification (SRS) into repeatable checks. Because custom products must succeed for both the average user and the edge-case explorer, the suite is divided into two complementary buckets: Positive cases (about 80%): scenarios that mirror the popular, obvious flows most users follow every day - sign up, add to cart, send messages. Negative cases (about 20%): less likely or invalid paths that stress the system with missing data, bad formats, or unusual sequencing - attempting checkout with an expired card, uploading an oversized file, refreshing mid-transaction. This 80/20 rule keeps the bulk of effort focused on what matters most. By framing every behavior - common or rare - as a well-documented micro-algorithm, the QA team proves that quality is systematically, visibly, and repeatedly verified. Applying the Pareto Principle to Manual QA The Pareto principle - that a focused 20% of effort uncovers roughly 80% of the issues - drives smart test planning just as surely as it guides product features.  When QA tries to run positive and negative cases together, however, that wisdom is lost. Developers must stop coding and wait for a mixed bag of results to come back, unable to act until the whole run is complete. In a typical ratio of one tester to four or five programmers, or two testers to ten, those idle stretches mushroom, dragging productivity down and souring client perceptions of velocity. A stepwise "positive-first" cadence eliminates the bottleneck. For every new task, the tester executes only the positive cases, logs findings immediately, and hands feedback straight to the developer. Because positive cases represent about 20% of total test time yet still expose roughly 80% of defects, most bugs surface quickly while programmers are still "in context" and can fix them immediately. Only when every positive case passes - and the budget or schedule allows - does the tester circle back for the heavier, rarer negative scenarios, which consume the remaining 80% of testing time to root out the final 20% of issues. That workflow looks like this: The developer has self-tests before hand-off. The tester runs the positive cases and files any bugs in JIRA right away. The tester moves on to the next feature instead of waiting for fixes. After fixes land, the tester re-runs regression tests to guard existing functionality. If the suite stays green, the tester finally executes the deferred negative cases. By front-loading the high-yield checks and deferring the long-tail ones, the team keeps coders coding, testers testing, and overall throughput high without adding headcount or cost. Escaping Murphy’s Law with Automated Regression Murphy’s Law - "Anything that can go wrong will go wrong" - hangs over every release, so smart teams prepare for the worst-case scenario: a new feature accidentally crippling something that used to work. The antidote is mandatory regression testing, driven by a suite of automated tests. An autotest is simply a script, authored by an automation QA engineer, that executes an individual test case without manual clicks or keystrokes. Over time, most of the manual test catalog should migrate into this scripted form, because hand-running dozens or hundreds of old cases every sprint wastes effort and defies the Pareto principle. Automation itself splits along the system’s natural boundaries: Backend tests (unit and API) Frontend tests (web UI and mobile flows) APIs - the glue between modern services - get special attention. A streamlined API automation workflow looks like this: The backend developer writes concise API docs and positive autotests. The developer runs those self-tests before committing code. Automation QA reviews coverage and fills any gaps in positive scenarios. The same QA then scripts negative autotests, borrowing from existing manual cases and the API specification. The result is a "battle-worthy army" of autotests that patrols the codebase day and night, stopping defects at the gate. When a script suddenly fails, the team reacts immediately - either fixing the offending code or updating an obsolete test. Well-organized automation slashes repetitive manual work, trims maintenance overhead, and keeps budgets lean. With thorough, continuously running regression checks, the team can push new features while staying confident that yesterday’s functionality will still stand tall tomorrow. Outcome & Value Delivered By marrying the Pareto principle with a proactive guard against Murphy’s Law, a delivery team turns two classic truisms into one cohesive strategy. The result is a development rhythm that delivers faster and at lower cost while steadily raising the overall quality bar. Productivity climbs without any extra headcount or budget, and the client sees a team that uses resources wisely, hits milestones, and keeps past functionality rock-solid. That efficiency, coupled with stability, translates directly into higher client satisfaction. How Belitsoft Can Help We help software teams find bugs quickly, spend less on testing, and release updates with confidence. If you are watching every dollar We place an expert tester on your team. They design a test plan that catches most bugs with only a small amount of work. Result: fewer testing hours, lower costs, and quicker releases. If your developers work in short, agile sprints Our process returns basic smoke test results within a few hours. Developers get answers quickly and do not have to wait around. Less waiting means the whole team moves faster. If your releases are critical We build automated tests that run all day, every day. A release cannot go live if any test fails, so broken features never reach production. Think of it as insurance for every deployment. If your product relies on many APIs and integrations We set up two layers of tests: quick checks your own developers can run, plus deeper edge case tests we create. These tests alert you right away if an integration slows down, throws errors, or drifts from the specification. If you need clear numbers for the board You get live dashboards showing test coverage, bug counts, and average fix time. Every test is linked to the user story or requirement it protects, so you can prove compliance whenever asked. Belitsoft is not just extra testers. We combine manual testing with continuous automation to cut costs, speed up delivery, and keep your software stable, so you can release without worry.

Mobile app quality: why does it matter? According to the survey from Dimensional Research, users are highly intolerant of any software issues. As a result, they are quick to ditch mobile apps after just a couple of occurrences. The key areas were mistakes are unforgivable are: Speed: 61% of users expect apps to start in 4 seconds or less; 49% of users expect apps to respond in 2 seconds or less. Responsiveness: 80% of users only attempt to use a problematic app three times or less; 53% of users uninstall or remove a mobile app with severe issues like crashes, freezes or errors; 36% of users stop using a mobile app if it is not battery-efficient. Stability: 55% of users believe that the app itself is responsible for performance issues; 37% lose interest in a company’s brand because of crashes or errors. The app markets, such as Google Play and App Store encourage users to leave reviews of apps. Low-point reviews will naturally lead to decreased app’s attractiveness. ‘Anyone can read your app store rating. There’s no way to hide poor quality in the world of mobile.’ Michael Croghan, Mobile Solutions Architect ‘Therefore,“metrics defining the mobile app user experience must be measured from the customer’s perspective and ensure it meets or exceeds expectations at all times.’ Dimensional Research The findings reinforce the importance of delivering quality mobile apps. This, in turn, necessitates establishing proper mobile app testing procedures. QA and testing: fundamentals Quality assurance and testing are often treated as the same thing. The truth is, quality assurance is a much broader term than just testing. Software Quality Assurance (SQA) consists of a means of monitoring the software engineering processes and methods used to ensure quality. SQA encompasses the entire software development process. It includes procedures such as: requirements definition, software design, coding, source code control, code reviews, software configuration management, testing, release management, and product integration. Testing, in its turn, is the execution of a system conducted to provide information about the quality of the software product or service under test. The purpose is to detect software bugs (errors or other flaws) and confirm that the product is ready for mass usage. The quality management system usually complies with one or more standards, such as ISO 9000 or model such as CMMI. Belitsoft leverages ISO 9001 certificate to continuously provide solutions that meet customer and regulatory requirements. Learn more about our testing services! Mobile app testing: core specifics The mobile market is characterized by fierce competition and users expect app vendors to update their apps frequently. Developers and testers are pushed to release new functionality in a shorter time. It often results in a “fail fast” development approach, with quick fixes later on. Source:http://www.perfecto.io Mobile applications are targeted for a variety of gadgets that are manufactured by different companies (Apple, Samsung, Lenovo, Xiaomi, Sony, Nokia, etc.). Different devices run on different operating systems (Android, iOS, Windows). The more platforms and operating systems are supported, the more combinations one has to test. Moreover, OS vendors constantly push out updated software, which forces developers to respond to the changes. Mobile phones were once devised to receive and make calls, so an application should not block communication. Mobile devices are constantly searching for the network connection (2G, 3G, 4G, WiFi, etc.) and should work decently at different data rates. Modern smartphones enable input through multiple channels (voice, keyboard, gestures, etc.). Mobile apps should take advantage of these capabilities to increase the ease and comfort of use. Mobile apps can be developed as native, cross-platform, hybrid or web (progressive web apps). Understanding the application type can influence a set of features one would check when testing an app. For example, whether an app relies on internet connection and how its behavior changes when it is online and offline. Mobile app testing: automated or manual? The right answer is both manual and automated. Each type has its merits and shortcomings and is better suited for a certain set of tasks at the certain stages of an app’s lifecycle. As the name implies, automated mobile app testing is performed with the help of automation tools that run prescripted test cases. The purpose of test automation is to make the testing process more simple and efficient. According to the World Quality Report, around 30% of testing is automated. So where is automation an option? Regression testing. This type of testing is conducted to ensure that an application is fully functional after new changes were implemented. As regression tests can be repeated, automation enables to run them quickly. Writing test scripts will require some time initially. However, it will pay off with fast testing in the long run, as the testers will not have to start the test from scratch each time. Load and performance testing. Automated testing will do a good job when it is needed to simulate an app’s behavior strained with thousands of concurrent users. Unit testing. The aim of unit testing is to inspect the correctness of individual parts of code, typically with an automated test suite. ‘A good unit test suite augments the developer documentation for your app. This helps new developers come up to speed by describing the functionality of specific methods. When coupled with good code coverage, a unit test acts as a safeguard against regressions. Unit tests are important for anything that does not produce a UI.’ Adrian Hall, AWS blog contributor Repetitive tasks. Automation can save the need to perform tedious tests manually. It makes the testing time-efficient and free of human errors.       While the primary concern of automated testing is the functionality of an app, manual testing focuses on user experience. Manual mobile app testing implies that testers manually execute test cases without any assistant automation tools. They play the role of end-user by checking the correct response of the application features as quickly as possible. Manual testing is a more flexible approach and allows for a more natural simulation of user actions. As a result, it is a good fit for agile environments, where time is extremely limited. As the mobile app unfolds, some features and functionality codes are also changing. Hence, automated test scripts have to be constantly reworked, which takes time. When working on a smaller product like MVP, manual testing allows to quickly validate whether the code behaves as it is intended. Moreover, manual testing is a common practice in: Exploratory testing. During the exploratory testing, a tester follows the given script and identify issues found in the process. Usability testing. Personal experience is the best tool to assess if the app looks, feels and responds right. This facet is about aesthetics and needs a human eye.  ‘While automated tests can streamline most of the testing required to release software, manual testing is used by QA teams to fill in the gaps and ensure that the final product really works as intended by seeing how end users actually use an application.’ Brena Monteiro, Software Engineer at iMusics Mobile app testing: where? When testing a mobile app one typically has three options for the testing environment: real devices, emulators/simulators, a cloud platform. Testing on real devices is naturally the most reliable approach that provides the highest accuracy of results. Testing in natural conditions also provides an insight into how an app actually works with all the hardware and software specifics. 70% of failures occur because apps are incompatible with device OS versions, and customization of OS by many manufacturers. About 30% of Android app failures stem from the incompatibility of apps with the hardware (memory, display, chips, sensors, etc.) Such things as push-notifications, devices sensors, geolocation, battery consumption, network connectivity, incoming interruptions, random app closing are easier to test on physical gadgets. Perfect replication and bug fixing are also can be achieved only on real devices. However, the number of mobile devices on the market makes it highly unlikely to test the software on all of them directly. The variety of manufacturers, platforms, operating systems versions, hardware and screen densities results in market fragmentation.  Moreover, not only devices from different manufacturers can behave differently, but the devices from the same manufacturer too. Source: mybroadband.co.za Source:developer.android.com. The share of Android OS versions When selecting a device’s stack, it is important not only to include the most popular of them but also to test an app on different screen sizes and OSes. Consumer trends may also vary depending on the geographical location of the target audience. Source: https://www.kantar.com As the names imply, emulators and simulators refer to special tools designed to imitate the behavior of real devices and operating systems. An emulator is a full virtual machine version of a certain mobile device that runs on a PC. It duplicates the inner structure of a device and its original behavior. Google’s Android SDK provides an Android device emulator. On the contrary, a simulator is a tool that duplicates only certain functionality of a device that does not simulate a real device’s hardware. Apple’s simulator for Xcode is an example. ‘Emulators and simulators “have many options for using different configurations, operating systems, and screen resolutions. This makes them the perfect tool for quick testing checks during a development workflow.’ John Wargo, Principal Program Manager for Visual Studio App Center at Microsoft ‘While this speeds up the testing process, it comes with a critical drawback — emulators can’t fully replicate device hardware. This makes it difficult to test against real-world scenarios using an emulator. Issues related to the kernel code, the amount of memory on a device, the Wi-Fi chip, and other device-specific features can’t be replicated on an emulator.’ Clinton Sprauve, Sauce Labs blog contributor The advent of cloud-based testing made it possible to get web-based access to a large set of devices for testing mobile apps. It can help to get over the drawbacks of both real devices and emulators/simulators. ‘If you want to just focus on quality and releasing mobile apps to the market, and not deal with device management, let the cloud do it for you.’ Eran Kinsbruner, lead software evangelist at Perfecto Amazon’s Device Farm, Google’s Firebase Test Lab, Microsoft's Xamarin Test Cloud, Kobiton, Perfecto, Sauce Labs are just some of the most popular services for cloud tests execution. ‘Emulators are good for user interface testing and initial quality assurance, but real devices are essential for performance testing, while device cloud testing is a good way to scale up the number of devices and operating systems.’ Will Kelly, a freelance technology writer Mobile app testing: what to test? Performance Performance testing explores functional realm as well as the back-end services of an app. Most vital performance characteristics include energy consumption, the usage of GPS and other battery-killing features, network bandwidth usage, memory usage, as well as whether an app operates properly under excessive loads. ‘It is recommended to start every testing activity with a fully charged battery, and then note the battery state every 10 minutes in order to get an impression of battery drain. Also, test the mobile app with a remaining device battery charge of 10–15%, because most devices will enter a battery-safe mode, disabling some hardware features of the device. In this state, it is very likely to find bugs such as requiring a turned-off hardware feature (GPS, for example).’ Daniel Knott, a mobile expert During the testing process, it is essential to check the app’s behavior when transiting to lower bandwidth networks (like EDGE) or unstable WiFi connections. Functionality Functional testing is used to ensure that the app is performing in the way in its expected. The requirements are usually predefined in specifications. Mobile devices are shipped with specific hardware features like camera, storage, screen, microphone, etc., and sensors like geolocation, accelerometer, ambient light or touch sensors. All of them should be tried out in different settings and conditions. ‘For example, “every camera with a different lens and resolution will have an impact on picture dimension and size; it is important to test how the mobile app handles the different picture resolutions, sizes, and uploading photos to the server.’ Daniel Knott No device is also safe from interruption scenarios like incoming calls, messages or other notifications. The aim is to spot potential hazards and unwanted issues that may arise in the event of an interruption. One should not also forget that mobile apps are used by human beings who don’t always do the expected things. For example, what happens when a user randomly pokes at an application screen or inputs some illogical data? To test such scenarios, monkey testing tools are used. Usability The goal of usability testing is to ensure the experience users get meets their expectations. Users easily get frustrated with their apps, and the most typical culprits on the usability side are: Layout and Design. User-friendly layout and design help to complete tasks easily. Therefore, mobile app testers should understand the guidelines each OS provides for their apps. Interaction. An application should feel natural and intuitive. Any confusion will eventually lead to the abandonment of an app. However, the assessment of an app’s convenience by a dedicated group may be a bit subjective. To get a more well-grounded insight into how your users perceive your app, one can implement A/B testing. The idea is to ship two different versions of an app to the same segment of end-users. By analyzing the users’ behavior, one can adjust the elements and features to the way the target audience likes it more. The practice can also guide marketers when making some strategic decisions. Localization When an app is targeted at the international market, it is likely to need the support of different languages to which devices are configured. The most frequent challenges associated with localization mobile app testing are related to date, phone number formats, currency conversion, language direction, and text lengths, etc. What is more, the language may also influence a general layout of the screen. For example, the look of the word “logout” varies considerably in different languages. Source: http://www.informit.com Therefore, it is important to think about language peculiarities in advance to make sure UI is adapted to handle different languages. Final thoughts The success of a mobile app largely depends on its quality. ‘The tolerance of the users is way lower than in the desktop era. The end-users who adopt mobile applications have high expectations with regards to quality, usability and, most importantly, performance.’ Eran Kinsbruner Belitsoft is dedicated to providing effective and quality mobile app testing. We adhere to the best testing practices to make the process fast and cost-effective. Write to us to get a quote!

How to Improve the Quality of Software Testing 1. Plan the testing and QA processes The QA processes directly determine the quality of your deliverables, making test planning a must. Building a test plan helps you understand the testing scope, essential activities, team responsibilities, and required efforts. Method 1. The IEEE 829 standard The IEEE 829 software testing standard is developed by the Institute of Electrical and Electronics Engineers, the world’s largest technical professional association. Applying their template in QA planning will help you cover the whole process from A to Z. The paper specifies all stages of software testing and documentation, ensuring you get a standardized approach. Following the IEEE 829 software testing standard, you have to consider 19 variables, namely, references, functions, risk issues, strategy, and others. As a result, the standard removes any doubts regarding what to include and in what order. Following a familiar document helps your team spend less time preparing a detailed test plan, focusing on other activities. Method 2. Google’s inquiry technique Anthony Vallone, a Software Engineer and Tech Lead Manager at Google, shared his company’s inquiry method for test planning. According to the expert, the perfect test plan is built of the balancing of several software development factors: Implementation costs; Maintenance costs; Monetary costs; Benefits; Risks. However, the main part is asking a set of questions in each stage. If you think of the risks, the questions you should ask are: 1. Are there any significant project risks, and how to mitigate them? 2. What are the project’s technical vulnerabilities? The answers to these points will help you get an accurate view of the details to include in your test plan. More questions are covered in Google’s testing blog. 2. Apply test-oriented development strategies Approach 1. Test-driven development Test-driven development (TDD) is an approach where engineers first create test cases for each feature, then write the code. If the code fails the test, the new code is written before moving on to the next feature. The TDD practice is also mentioned in Google Cloud’s guide for continuous testing. It is explained that unit tests help the developer test every method, class, or feature in an isolated environment. Thus, the engineer detects bugs almost immediately, ensuring the software has little to no defects during deployment. Approach 2. Pair programming Pair programming is when two software developers work simultaneously: one writes the code while the other reviews it. Empirical research concludes that pair programming is most effective when working on complex tasks. Thus, test-driven development and pair programming leave nearly no space for errors and code inconsistency. 3. Start testing early with a shift-left approach Many teams have a common mistake in putting the testing activities as the last process before production. Considering that the costs to find & fix a bug increase 10 times with each development stage, this is an immense waste of resources. Shifting left comes as a cost-efficient solution. If you start testing early, you get the following benefits: Bug detection during early SDLC stages; Reduced time and money expenses; Increased testing reliability; Faster product delivery. Moving the testing activities to an earlier stage gives the QA team more space for strategizing. The engineers can review & analyze the product requirements from a fresh viewpoint, create bug prevention mechanisms by collaborating with developers, and implement automated testing for repetitive actions. 4. Conduct formal technical reviews A formal technical review is a group meeting where the project’s software engineers evaluate the developed application based on the set standards and requirements. It is also an efficient way to detect hidden issues collectively. The meeting usually involves up to 5 specialists and is planned ahead in detail to maintain maximum speed & consistency. It should last no more than 2 hours. This is the optimal timeframe to review specific parts of the software. It also includes such types of reviews as: Walkthroughs; Inspections; Round-robin reviews, and others. One person records all mentioned issues during the meeting to consolidate them in one file. Afterward, a technical review summary is created that answers the following questions: 1. What was reviewed? 2. Who reviewed it? 3. What are the discoveries and conclusions? These answers help the team choose the best direction for enhancement and improve the software’s quality. 5. Build a friendly environment for your QA team Psychological well-being is one of the factors that directly influence a person’s productivity and job attitude. Keeping a friendly work environment will help you keep the team motivated & energetic. Define the QA roles during the planning stage At least six QA roles are often combined in software testing. Aligning the responsibilities with each position is the key to a proper load balance and understanding. Encourage communication and collaboration Well-built communication helps the team solve tasks much faster. It is the key to avoiding misunderstandings and sourcing creative ideas for enhancing work efficiency. Here is what you can do: Hold team meetings during the work process and discuss current issues & opinions; Communicate with teammates in private; Hold retrospective meetings to celebrate success and ponder upon failures. Enhancing communication & collaboration increases the quality of your testing processes, as the team always has a fresh view of the situation. 6. Apply user acceptance testing User acceptance testing determines how good your software is from an end user's standpoint. For example, the software may be perfect technically but absolutely unusable for your target audience. That’s why you need your customers to estimate the app. Do not use functional testers A functional tester is unlikely to cover all real-world scenarios because he would focus on the technical part. This is already covered in unit tests. Thus, you need as many unpredictable scenarios as possible. Hire professional UAT testers An acceptance tester focuses on the user-friendliness of your product by running multiple scenarios & scripts, and involving interested users. The process ensures you get an app focused on real people, not personas. You can hire a professional UAT team with an extensive testing background for the job. Set clear exit criteria Evaluating the results of UAT tests is challenging due to immense subjectiveness. Setting several exit criteria helps you get more precise information. Stanford University has developed a template for UAT exit criteria that simplifies the process. 7. Optimize the use of automated testing Applying automated testing increases test’s depth, scope, and overall quality by saving time, money, and effort. It is the best approach when running a repetitive task multiple times throughout a project. However, note that it is not a complete substitute for manual testing. Use a test automation framework A test automation framework is a set of tools and guidelines for creating test cases. There are different types, each designed for specific needs. A framework’s major benefit is automating the core testing processes: Test data generation; Test execution; Test results analysis. Additionally, test automation frameworks are very scalable. They can be adapted to support new features and increased load as your business grows. Stay tuned for Meta’s open-source AI tools Facebook’s engineering team has recently published an article about their usage of SapFix and Sapienz. These are AI hybrid tools created to reduce the team's amount of time to test and debug. One of the key benefits is the autonomous generation of multiple potential fixes per bug, evaluating the proposition’s quality, and waiting for human approval. It is expected that the tools will be released in open source in the near future. Meanwhile, you can check out Jackson Gabbard’s description of Facebook’s software testing process when he was an engineer there. Hire a professional QA automation team Hiring an outsource test automation team helps you get high-quality solutions and reduce the load on your in-house engineers. Some of the areas covered include: GUI testing Unit testing API testing Continuous testing. You can get a QA team with a background in your industry, bringing the required expertise at cost-efficient terms. 8. Combine exploratory and ad hoc testing Exploratory and ad hoc testing is when testers cover random lifelike situations, usually to discover bugs that aren’t found by regular test types. Major key points: Minimum documentation required; Random actions with little to no planning; Maximum creativity. Both are somewhat similar to user acceptance testing, but the minor differences are the total game-changers. Exploratory testing Exploratory testing is all about thinking outside the box. Testers get nearly complete freedom of the process, as there are no requirements except for the pre-defined goals. Also, the approach is somewhat structured due to the mandatory documentation. The results are used to build future test cases, so the exploratory method is closer to formal testing types. It is best used for quick feedback from a user perspective. Joel Hynoski, a former Google Engineer Manager, wrote about Google’s usage of exploratory testing when checking their applications. Irina Bobrovskaya, Testing Department Manager "Exploratory testing should be applied in all projects in one way or another. It helps the tester see the app from the end user's view, regularly shift case scenarios, cover more real-life situations, and grow professionally. Exploratory testing is especially helpful in projects with scarce or absent requirements and documentation. As an example, our SnatchBot project (web app for chatbot creation) illustrates how explanatory testing helped us get to know the project, set the right priorities, build a basic documentation form, and test the app. " Ad hoc testing Ad hoc testing is an informal approach that has no rules, goals, or strategies. It’s a method that implies the usage of random techniques to find errors. Testers chaotically check the app, counting on their experience and knowledge of the system. QA engineers typically conduct ad hoc testing after all formal approaches are executed. It's the last step to find bugs missed during automated & regression tests, so no documentation is created. 9. Employ code quality measurements If your team gets a clear definition of quality, they’ll know which metrics to keep in mind during work. The CISQ Software Quality Model defines four aspects: Security – based on the CWE/SANS top 25 errors; Reliability – issues that affect availability, fault tolerance, and recoverability; Performance efficiency – weaknesses that affect the response time and hardware usage; Maintainability – errors that impact testability, scalability, etc. The model includes a detailed set of standards for each aspect, providing 100+ rules every software engineer must consider. 10. Report bugs effectively Good bug reports help the team identify and solve the problem significantly faster. Apart from covering the general data, you must always consider adding the following: Potential solutions; Reproduction steps; An explanation of what went wrong; A screenshot of the error. Bug report template You can see a very basic bug report template on GitHub. It can be changed according to your needs based on the project’s requirements. Here is the bug report template used in most projects at Belitsoft. Depending on the project’s needs, we may modify the sheet by adding a video of the bug, information about the bug’s environment, and application logs. Summury: Priority: Environment: If bug is reproduced in specific environment it can be mentioned here (e.g. Browser, OS version, etc.) Reporter: Assignee: Person responsible for fixing is mentioned here Affect version: Product version where bug is reproduced Fix version: Component: Component/part of the project Status: Issue descriprion: Pre-conditions: if there are any Steps to reproduce: 1. 2. .. n Actual result: Expected result: Can also include the link to the requirements Additional details: Some specific details of reproducing can be mentioned here Attachments: - Screenshots - Video (if it is helpful) Additional: - Screenshots with error (in console/network) - Logs with error Links to the Story/Task (or related issue): if there are any Want the help of a professional QA team to improve your software testing quality? Get a free consultation from Belitsoft’s experts now!

Types of Data Migration Testing Clients typically have established policies and procedures for software testing after data migration. However, relying solely on client-specific requirements might limit the testing process to known scenarios and expectations. The inclusion of generic testing practices and client requirements improves data migration resilience.  Ongoing Testing Ongoing testing in data migration refers to implementing a structured, consistent practice of running tests throughout the development lifecycle. After each development release, updated or expanded portions of the Extract, Transform, Load (ETL) code are tested with sample datasets to identify issues early on. Depending on the project's scale and risk, it may not be a full load but a test load. The emphasis is on catching errors, data inconsistencies, or transformation issues in the data pipeline in advance to prevent them from spreading further. Data migration projects often change over time due to evolving business requirements or new data sources. Ongoing testing ensures the migration logic remains valid and adapts to these alterations. A well-designed data migration architecture directly supports ongoing testing. Breaking down ETL processes into smaller, reusable components makes it easier to isolate and test individual segments of the pipeline. The architecture should allow for seamless integration of automated testing tools and scripts, reducing manual effort and increasing test frequency. Data validation and quality checks should be built into the architecture, rather than treated as a separate layer. Unit Testing Unit testing focuses on isolating and testing the smallest possible components of software code (functions, procedures, etc.) to ensure they behave as intended. In data migration, this means testing individual transformations, data mappings, validation rules, and even pieces of ETL logic. Visual ETL tools simplify the process of building data pipelines, often reducing the need for custom code and making the process more intuitive. A direct collaboration with data experts enables you to define the specification for ETL processes and acquire the skills to construct them using the ETL tool simultaneously. However, visual tools can help simplify the process, but complex transformations or custom logic may still require code-level testing. Unit tests can detect subtle errors in logic or edge cases that broader integration or functional testing might miss. A clearly defined requirements document outlines the target state of the migrated data. Unit tests, along with other testing types, should always verify that the ETL processes are correctly fulfilling these requirements. While point-and-click tools simplify building processes, it is essential to intentionally define the underlying data structures and relationships in a requirements document. This prevents ad hoc modifications to the data design, which can compromise long-term maintainability and data integrity. Integration Testing Integration testing focuses on ensuring that different components of a system work together correctly when combined.  The chances of incompatible components rise when teams in different offshore locations and time zones build ETL processes. Moving the ETL process into the live environment introduces potential points of failure due to changes in the target environment, network configurations, or security models. Integration testing confirms that all components can communicate and pass data properly, even if they were built independently.  It simulates the entire data migration flow. This verifies that data flows smoothly across all components, transformations are executed correctly, and data is loaded successfully into the target system. Integration testing helps ensure no data is lost, corrupted, or inadvertently transformed incorrectly during the migration process. These tests also confirm compatibility between different tools, databases, and file formats involved in the migration. We maintain data integrity during the seamless transfer of data between systems. Contact us for expert database migration services. Load Testing Load testing assesses the target system's readiness to handle the incoming data and processes.  Load tests will focus on replicating the required speed and efficiency to extract data from legacy system(s) and identify any potential bottlenecks in the extraction process. The goal is to determine if the target system, such as a data warehouse, can handle the expected data volume and workload. Inefficient loading can lead to improperly indexed data, which can significantly slow down the load processes. Load testing ensures optimization in both areas of your data warehouse after migration. If load tests reveal slowdowns in either the extraction or loading processes, it may signal the need to fine-tune migration scripts, data transformations, or other aspects of the migration.  Detailed reports track metrics like load times, bottlenecks, errors, and the success rate of the migration. It is also important to generate a thorough audit trail that documents the migrated data, when it occurred, and the responsible processes.  Fallback Testing Fallback testing is the process of verifying that your system can gracefully return to a previous state if a migration or major system upgrade fails.  If the rollback procedure itself is complex, such as requiring its own intricate data transformations or restorations, it also necessitates comprehensive testing. Even switching back to the old system may require testing to ensure smooth processes and data flows. It's inherently challenging to simulate the precise conditions that could trigger a disastrous failure, requiring a fallback. Technical failures, unexpected data discrepancies, and external factors can all contribute. Extended downtime is costly for many businesses. Even when core systems are offline, continuous data feeds, like payments or web activity, can complicate the fallback scenario. Each potential issue during a fallback requires careful consideration. Business Impact How critical is the data flow? Would disruption cause financial losses, customer dissatisfaction, or compliance issues? High-risk areas may require mitigation strategies, such as temporarily queuing incoming data. Communication Channels Testing how you will alert stakeholders (IT team, management, customers) about the failure and the shift to fallback mode is essential. Training users on fallback procedures they may never need could burden them during a period focused on migration testing, training, and data fixes. In industries where safety is paramount (e.g., healthcare, aviation), training on fallback may be mandatory, even if it is disruptive. Mock loads offer an excellent opportunity to integrate this. Decommissioning Testing Decommissioning testing focuses on safely retiring legacy systems after a successful data migration.  You need to verify that your new system can successfully interact with any remaining parts of the legacy system. Often, legacy data needs to be stored in an archive for future reference or compliance purposes.  Decommissioning testing ensures that the archival process functions correctly and maintains data integrity while adhering to data retention regulations. When it comes to post-implementation functionality, the focus is on verifying the usability of archived data and the accurate and timely creation of essential business reports. Data Reconciliation (or Data Audit)  Data reconciliation testing specifically aimed at verifying that the overall counts and values of key business items, including customers, orders, financial balances, match between the source and target systems after migration. It goes beyond technical correctness, with the goal of ensuring that the data is not only accurate but also relevant to the business. The legacy system and the new target system might handle calculations and rounding slightly differently. Rounding differences during data transformations may seem insignificant, but they can accumulate and result in significant discrepancies for the business. Legacy reports are considered the gold standard for data reconciliation, if available. Legacy reports used regularly in the business (like trial balances) already have the trust of stakeholders. If your migrated data matches these reports, there is greater confidence in the migration's success. However, if new reports are created for reconciliation, it is important to involve someone less involved in the data migration process to avoid unconscious assumptions and potential confirmation bias. Their fresh perspective can help identify even minor variations that a more familiar person might overlook. Data Lineage Testing Data lineage testing provides a verifiable answer to the crucial question: "How do I know my data reached the right place, in the right form?" Data lineage tracks: where data comes from (source systems, files, etc.) every change the data undergoes along its journey (calculations, aggregations, filtering, format changes, etc.) where the data ultimately lands (tables, reports, etc.) Data lineage provides an audit trail that allows you to track a specific piece of data, like a customer record, from its original source to its final destination in a new system. This is helpful in identifying any issues in the migrated data, as data lineage helps isolate where things went wrong in the transformation process. By understanding the exact transformations that the data undergoes, you can determine the root cause of any problems. This could be a flawed calculation, incorrect mapping, or a data quality issue in the source system. Additionally, data lineage helps you assess the downstream impact of making changes. For example, if you modify a calculation, the lineage map can show you which reports, analyses, or data feeds will be affected by this change. User Acceptance Testing User acceptance testing is the process where real-world business users verify the migrated data in the new system meets their functional needs.  It's not just about technical correctness - it's also about ensuring that the data is coherent, the reports are reliable, and the system is practical for their daily activities. User acceptance testing often involves using realistic test data sets that represent real-world scenarios. Mock Load Testing Challenges Mock loads simulate the data migration process as closely as possible to a real-life cutover event. It's a valuable final rehearsal to find system bottlenecks or process hiccups. A successful mock load builds confidence. However, it can create a false sense of security if limitations aren't understood. Often, real legacy data can't be used for mock loads due to privacy concerns. To comply, data is masked (modified or replaced), which potentially hides genuine data issues that would surface with the real dataset during the live cutover. Let's delve deeper into the challenges of mock load testing. Replicating the full production environment for a mock load demands significant hardware resources. This includes having sufficient server capacity to handle the entire legacy dataset, a complete copy of the migration toolset, and the full target system. Compromising on the scale of the mock load limits its effectiveness. Performance bottlenecks or scalability issues might lurk undetected until the real data volume is encountered. Cloud-based infrastructure can help with hardware constraints, especially for the ETL process, but replicating the target environment can still be a challenge. Mock loads might not fully test necessary changes for customer notifications, updated interfaces with suppliers, or altered online payment processes. Problems with these transitions may not become apparent until the go-live stage. Each realistic mock load is like a mini-project on its own. ETL processes that run smoothly on small test sets may struggle when dealing with full data volumes. Considering bug fixing and retesting, a single cycle could take weeks or even a month. Senior management may expect traditional, large-scale mock loads as a final quality check. However, this may not align with the agile process enabled by a good data migration architecture and continuous testing. With a good data migration architecture, it is preferable to perform smaller-scale or targeted mock loads throughout development, rather than just as a final step before go-live. Data consistency  Data consistency ensures that data remains uniform and maintains integrity across different systems, databases, or storage locations. For instance, showing the same number of customer records during data migration is not enough to test data consistency. You also need to ensure that each customer record is correctly linked to its corresponding address. Matching Reports In some cases, trusted reports already exist to calculate figures like a trial balance for certain types of data, such as financial accounts. Comparing these reports on both the original and the target systems can help confirm data consistency during migration. However, for most data, tailored reports like these may not be available, leading to challenges. Matching Numeric Values This technique involves finding a numeric field associated with a business item, such as the total invoice amount for a customer. To identify discrepancies, calculate the sum of this numeric field for each business item in both the legacy and target systems, and then compare the sums. Each customer has invoices. If Customer A has a total invoice amount of $1,250 in the legacy system, then Customer A in the target should also have the same total invoice amount. Matching Record Counts Matching numeric values relies on summing a specific field, making it suitable when there is such a field (invoice totals, quantities, etc.) On the other hand, matching record counts is more broadly applicable as it simply counts associated records, even if there is no relevant numeric field to sum. Example with Schools Legacy System: school A has 500 enrolled students. Target System: after migration, School A should still display 500 enrolled students. Preserve Legacy Keys Legacy systems often have unique codes or numbers to identify customers, products, or orders. This is its legacy key. If you keep the legacy keys while moving data to a new system, you have a way to trace the origins of each element back to the old system. In some cases, both the old and new systems need to run simultaneously. Legacy keys allow for connecting related records across both systems.  The new system has a dedicated field for old ID numbers. During the migration process, the legacy key of each record is copied to this new field. Conversely, any new records that were not present in the previous system will lack a legacy key, leading to an empty field and wasted storage. This unoccupied field can negatively impact the database's elegance and storage efficiency. Concatenated keys Sometimes, there is no single field that exists in both the legacy and target systems to guarantee a unique match for every record, like a customer ID. This makes direct comparison difficult.  One solution is to use concatenated keys, where you choose fields to combine like date of birth, partial surname, and address fragment. You create this combined key in both systems, allowing you to compare records based on their matching concatenated keys. While there may be some duplicates, it is a more focused comparison than just checking record counts. If there are too many false matches, you can refine your field selection and try again. User Journey Testing Let's explore how user journey testing works with an example.    To ensure a smooth transition to a new online store platform, a user performs a comprehensive journey test. The test entails multiple steps, including creating a new customer account, searching for a particular product, adding it to the cart, navigating through the checkout process, inputting shipping and payment details, and completing the purchase. Screenshots are taken at each step to document the process. Once the store's data has been moved to the new platform, the user verifies that their account details and order history have been successfully transferred.  Additional screenshots are taken for later comparison. Hire offshore testing team to save up to 40% on cost, guaranteeing a product free from any errors, while you dedicate your efforts to development and other crucial processes. Seek our expert assistance by contacting us. Test Execution During a data migration, if a test fails, it means there is a fault in the migrated data. Each problem is carefully investigated to find the root cause, which could be the original source data, mapping rules used during transfer, or a bug in the new system. Once the cause is identified, the problem is assessed based on its impact on the business. Critical faults are fixed urgently with an estimated date for the fix. Less critical faults may be allocated to upcoming system releases. Sometimes, there can be disagreements about whether a problem is a true error or a misinterpretation of the mapping requirements. In such cases, a positive working relationship between the internal team and external parties involved in the migration is crucial for effective problem handling. Cosmetic faults Cosmetic faults refer to discrepancies or errors in the migrated data that do not directly impede the core functionality of the system or cause major business disruptions. Examples include slightly incorrect formatting in a report.  Cosmetic issues are often given lower priority compared to other issues. User Acceptance Failures When users encounter issues or discrepancies that prevent them from completing tasks or don't match the expected behavior, these are flagged as user acceptance failures. If the failure is due to a flaw in the new system's design or implementation, it's logged into the system's fault tracking system. This initiates fixing it within the core development team. If the failure is related to the way the data migration process was designed or executed (for example, errors in moving archived data or incorrect mappings), a data migration analyst will initially examine the issue. They confirm its connection to the migration process and gather information before involving the wider technical team. Mapping Faults Mapping faults typically occur when there is a mismatch between the defined mapping rules (how data is supposed to be transferred between systems) and the actual result in the migrated data. The first step is to consult the mapping team. They meticulously review the documented mapping rules for the specific data element related to the fault. This guarantees accurate rule following. If the mapping team confirms the rules are implemented correctly, their next task is to identify the stage in the Extract, Transform, Load process where the error is happening.  Process Faults Within the Migration Unlike data-specific errors, process faults refer to problems within the overall steps and procedures used to move data from the legacy system to the new one. These faults can cause delays, unexpected disconnects in automated processes, incorrect sequencing of tasks, or errors from manual steps. Performance Issues Performance issues during data migration focus on the system's ability to handle the expected workload efficiently. These issues do not involve incorrect data, but the speed and smoothness of the system's operations.   Here are some common examples of performance problems: Slow system response times Users may experience delays when interacting with the migrated system. Network bottlenecks causing delays in data transfer The network infrastructure may not have sufficient bandwidth to handle the volume of data being moved. Insufficient hardware resources leading to sluggish performance The servers or other hardware powering the system may be underpowered, impacting performance. Root Cause Analysis Correctly identifying the root cause ensures the problem gets to the right team for the fastest possible fix.  Fixing a problem in isolation is not enough. To truly improve reliability, you need to understand why failures are happening repeatedly. It's important to differentiate between repeated failures caused by flaws in the process itself, such as lack of checks or insufficient guidance, and individual mistakes. Both need to be addressed, but in different ways. Without uncovering the true source of problems, any fixes implemented will only serve as temporary solutions, and the errors are likely to persist. This can undermine data integrity and trust in the overall project. During a cutover to a new system (transition to the new system), data problems can arise in three areas: Load Failure. The data failed to transfer into the target system at all. Load Success, Production Failure. The data is loaded, but breaks when used in the new system. Actually a Migration Issue. The problem is due to an error during the migration process itself. Issues within the Extract, Transform, Load Process Bad Data Sources. Choosing unreliable or incorrect sources for the migration introduces problems right from the start. Bugs. Errors in the code that handle extracting, modifying, or inserting the data will cause issues. Misunderstood Requirements. Even if the code is perfectly written, it won't yield the intended outcome if the ETL was designed with an incorrect understanding of requirements. Test Success The data testing phase is considered successful when all tests pass or when the remaining issues are adequately addressed. Evidence of this success is presented to stakeholders in charge of the overall business transformation project. If the stakeholders are satisfied, they give their approval for the data readiness aspect. This officially signals the go-ahead to proceed with the complete data migration process. We provide professional cloud migration services for a smooth transition. Our focus is on data integrity, and we perform thorough testing to reduce downtime. Whether you choose Azure Cloud Migration services or AWS Cloud migration and modernization services, we make your move easier and faster. Get in touch with us to start your effortless cloud transition with the guidance of our experts.

Cross-Browser and Cross-Platform Testing Strategies in Cross-Browser and Cross-Platform Testing There are two common strategies: testing with developers or having a dedicated testing team. Developers usually only test in their preferred browser and neglect other browsers, unless they are checking for client-specific or compatibility issues. The Quality Assurance (QA) team prioritizes finding and fixing compatibility issues early on. This approach ensures a focus on identifying and resolving cross-browser issues before they become bigger problems. The QA professionals use their expertise to anticipate differences across browsers and use testing strategies to address these challenges. Tools for Cross-Browser and Cross-Platform Testing Specific tools are employed to guarantee complete coverage and uphold high quality standards. This process involves evaluating the performance and compatibility of a web application across different browsers, including popular options like Firefox and Chrome, as well as less commonly used platforms. Real device testing: Acknowledging the limitations of desktop simulations, the QA team incorporates testing on actual mobile devices to capture a more accurate depiction of user experience. This is a fundamental practice for mobile application testing services, enhanced by detailed checklists and manual testing to achieve this. Virtual machines and emulators: Tools like VirtualBox are used to simulate target environments for testing on older browser versions or different operating systems. Services like BrowserStack offer virtual access to a wide range of devices and browser configurations that may not be physically available, facilitating comprehensive cross-browser/device testing. Developer tools: Browsers like Chrome and Firefox have advanced developer tools that allow for in-depth examination of applications. These tools are useful for identifying visual and functional issues, although they may not perfectly render actual device performance, leading to some inaccuracies. Quite often, when the CSS tested in Chrome's responsive mode appears correct, clients report issues, highlighting discrepancies between simulated and actual device displays. Mobile testing in dev tools has limitations like inaccurate size emulation and touch interaction discrepancies in browsers. We have covered mobile app testing best practices that can bridge the gap for optimal performance across devices and user scenarios in this article. CSS Normalization: Using Normalize.css helps create a consistent baseline for styling across different browsers. It addresses minor CSS inconsistencies, such as varying margins, making it easier to distinguish genuine issues from stylistic discrepancies. Automated testing tools: Ideally, cross-browser testing automation tools are integrated into the continuous integration/continuous deployment (CI/CD) pipeline. These tools are configured to trigger tests as part of the testing phase in CI/CD, often after code is merged into a main branch and deployed to a staging or development environment. This ensures that the application is tested in an environment that closely replicates the production setting. These tools can capture screenshots, identify broken elements or performance issues, and replicate user interactions (e.g., scrolling, swiping) to verify functionality and responsiveness across all devices before the final deployment. We provide flawless functionality across all browsers and devices with our diverse QA testing services. Reach out to ensure a disruption-free user experience for your web app. Test the applications on actual devices To overcome the limitations of developer tools, QA professionals often test applications in actual devices or collaborate with colleagues for accurate cross-device compatibility. Testing on actual hardware provides a more precise visual representation, capturing differences in spacing and pixel resolution that simulated environments in dev tools may miss. Testing on actual hardware gives a more accurate visual representation. It captures spacing and pixel resolution differences that may be missed in simulated environments in dev tools. Firefox's Developer Tools have a feature for QA teams. It lets them inspect and analyze web content on Android devices from their desktops. This helps understand how an application behaves in real devices. It highlights device-specific behaviors like touch interactions and CSS rendering. These behaviors are important for ensuring a smooth user experience. This method is invaluable for spotting usability issues that might be ignored in desktop simulations. Testing on a physical device also allows QA specialists to assess how their application performs under various network conditions (e.g., Wi-Fi, 4G, 3G), providing insights into loading times, data consumption, and overall responsiveness. Firefox's desktop development tools offer a comprehensive set of debugging tools, such as the JavaScript console, DOM inspector, and network monitor, to use while interacting with the application on the device. This integration makes it easier to identify and resolve issues in real-time. Testing on physical device, despite its usefulness, is often overlooked, possibly because of the convenience of desktop simulations or a lack of awareness about the feature. However, for those committed to delivering a refined, cross-platform web experience, it represents a powerful component of the QA toolkit, ensuring thorough optimization for the diverse range of devices used by end-users. The hands-on approach helps QA accurately identify user experience problems and interface discrepancies. In the workplace, a 'device library' offers QA professionals access to various hardware like smartphones, tablets, and computers. It also helps in testing under different simulated network conditions. This allows the team to evaluate how an application performs at different data speeds and connectivity scenarios, such as Wi-Fi, 4G, or 3G networks. Testing in these diverse network environments ensures that the application provides a consistent user experience, regardless of the user's internet connection. When QA teams encounter errors or unsupported features during testing, they consult documentation to understand and address the issues, refining their approach to ensure compatibility and performance across all targeted devices. For a deeper insight into refining testing strategies and enhancing software quality, explore our guide on improving the quality of software testing. Integration Testing & End-to-end Testing Increased code reliability confidence is a key reason for adopting end-to-end testing. It allows for making significant changes to a feature without worrying about other areas being affected. As testing progresses from unit to integration, and then to end-to-end tests within automated testing frameworks, the complexity of writing these tests increases. Automated test failures should indicate real product issues, not test flakiness. To ensure the product's integrity and security, QA teams aim to create resilient and reliable automated tests. In the transition from unit to integration and end-to-end tests, complexity rises. It's crucial for tests to identify genuine product issues, avoiding failures due to test instability. Element selection Element selection is a fundamental aspect of automated web testing, including end-to-end testing. Automated tests simulate user interactions within a web application, like clicking buttons, filling out forms, and navigating through pages. To achieve this, modern testing frameworks, like test automation framework, are essential as they provide efficient and reliable strategies for selecting elements. For these simulations to be effective, the testing framework must accurately identify and engage with specific elements on the web page. Element selection facilitates these simulations by providing a mechanism to locate and target elements. Modern web applications introduce additional complexities, with frequent updates to page content facilitated by AJAX, Single Page Applications (SPAs), and other technologies that enable dynamic content changes. Testing in such dynamic environments requires strategies capable of selecting and interacting with elements that may not be immediately visible upon the initial page load. These elements become accessible or change following certain user actions or over time. The foundation of stable and maintainable tests lies in robust element selection strategies. Tests that are designed to consistently locate and interact with the correct elements are less likely to fail due to minor UI adjustments in the application. This enhances the durability of the testing suite. The efficiency of element selection affects the speed of test execution. Optimized selectors can speed up test runs by quickly locating elements without scanning the entire Document Object Model (DOM). This is especially important in continuous integration (CI) and continuous deployment (CD) pipelines, with frequent testing. Tools such as Cypress assist with this by enabling tests to wait for elements to be prepared for interaction. However, there are constraints like a maximum wait time (e.g., two seconds), which may not always align with the variability in how quickly web elements load or become interactive. WebDriver provides a simple and reliable selection method, similar to jQuery, for such tasks. When web applications are designed with testing in mind—especially through the consistent application of classes and IDs to key elements—the element selection process becomes considerably more manageable. In such cases, issues with element selection are rare, and mostly occur when unexpected changes to class names happen, which is more of a design and communication problem within the development team rather than the issue with the testing software itself. Component Testing  Write Сustom Сomponents to save time on testing third-party components  QA teams might observe that when a project demands full control over its components, opting to develop these in-house could be beneficial. This ensures a deep understanding of each component's functionality and limitations, which may lead to higher quality and more secure code.  It also helps avoid issues like vulnerabilities, unexpected behavior, or compatibility problems that can arise from using third-party components.   By vetting each component thoroughly, the QA team can ensure adherence to project standards and create a more predictable development environment during software testing services. When You Might Need to Test Third-Party Components Despite the advantages of custom components, there are certain scenarios where the use of third-party solutions is necessary. These scenarios include: When a third-party component is integral to your application's core functionality, test it for expected behavior in specific use cases, even if the component itself is widely used and considered reliable.  If integrating a third-party component requires extensive customization or complex configuration, testing can help verify that the integration works as intended and doesn't introduce bugs or vulnerabilities into your application. In cases where the third-party component lacks a robust suite of tests or detailed documentation, conducting additional tests can provide more confidence in its reliability and performance. For applications where reliability is non-negotiable, like in financial, healthcare, safety-related systems, even minor malfunctions can have severe consequences. Testing all components, including third-party ones, can be a part of a risk mitigation strategy. Snapshot Testing in React development  Snapshot testing serves as a technique used in software testing to ensure the UI does not change unexpectedly. In React development projects—a popular JavaScript library for building user interfaces—snapshot testing involves saving the rendered output of a component and comparing it with a reference 'snapshot' in subsequent tests to maintain UI consistency. The test fails if the output changes, indicating a rendering change in the component. This method should catch unintended modifications in the component's output. As the project evolves, frequent updates to the components lead to constant changes in the snapshots. Each code revision might necessitate an update to the snapshots, a task that becomes more challenging as the project scales, consuming significant time and resources. Snapshot testing can be valuable in certain contexts. However, its effectiveness depends on the project's nature and implementation. For projects with frequent iterations and updates, maintaining snapshot tests may have more disadvantages than benefits. Tests may fail due to any change, resulting in large, unreadable diffs that are difficult to parse. Improve the safety and performance of your front-end applications with our extensive QA and security testing services. Contact us now to protect your web app and deliver an uninterrupted user experience. Accessibility Testing Fundamentals and Broader Benefits of Web Accessibility The product should have some level of accessibility instead of being completely inaccessible. Incorporating alt text for images, semantic HTML for better structure, accessible links, and color contrast is vital for making digital content usable by people with disabilities, such as those who use screen readers or have visual impairments.  The broader benefits of accessibility testing extend beyond aiding individuals with disabilities but also enhance overall usability, such as keyboard navigation and readability. Challenges and Neglect in Implementing Web Accessibility Implementing accessibility features often requires time, resources, and, sometimes, specialized skills. This can be difficult due to economic or resource constraints. Adding accessibility features takes extra design and development time, which can be challenging when working with tight deadlines. After a product is launched, the focus often shifts to avoid changes that could disrupt the product, making accessibility improvements less of a priority. Easy-to-implement accessibility elements may be included during initial development, but more complex features are often overlooked. Companies may not allocate resources for accessibility features unless there is a clear customer demand or legal requirement. Media companies recognize the need for certain accessibility requirements and make efforts to ensure their apps are accessible, such as considering colorblind users in their branding and style choices. Government projects strictly enforce accessibility requirements and consistently implement them. A lack of support and prioritization occurs when there is not a strong emphasis or commitment to ensuring products are accessible. This is a common situation in web development, where accessibility considerations are often secondary. Accessibility is not yet recognized as a critical aspect of development and is thus not actively encouraged or mandated by leadership. Even when implemented, these features are often neglected over time. Accessible websites require active testing to accommodate all users, including those who rely on assistive technologies like screen readers. Automating Web Accessibility Checks Software tools can automatically check certain accessibility elements of a website or app. Examples include: Ensuring images include alternative text (alt text) for screen reader users. Verifying proper labeling of interactive elements like buttons to assist users with visual or cognitive impairments in navigation and understanding. Checking the association of input fields with their respective labels for clarity in forms, which helps users understand what information is required. Development tools in browsers, particularly Firefox's developer tools, are increasingly valuable for conducting accessibility testing, revealing potential barriers. Limitations of Accessibility Tools Accessibility tools can sometimes be complex or tricky to implement without proper guidance or experience. For instance, VoiceOver, an accessibility tool on Mac, encounters technical issues that can prevent its effective use. Tools like WAVE and WebAxe are helpful in identifying certain accessibility issues, such as missing alt tags or improper semantic structure, but they cannot address all aspects.  For example: They are not able fully to assess whether the website's semantic structure is correct, including proper heading hierarchy. They cannot determine the quality of alt text, such as whether it is descriptive enough. They have limitations in checking for certain navigational aids like skip navigation links, which are important for keyboard-only users. Automated accessibility testing has a limitation in assessing color contrast with text overlapping image backgrounds. This is because the color contrast can vary based on the colors and gradients of the underlying image. Web accessibility standards and the different levels of compliance Adherence to web accessibility standards, such as the Web Content Accessibility Guidelines (WCAG), is not only a matter of legal compliance in many jurisdictions but also a best practice for inclusive design. These standards are categorized into different levels of compliance: A (minimum level), AA (mid-range), and AAA (highest level). Each level imposes more stringent requirements than the previous one. Resources like the Accessibility Project (a11Yproject.com), the Mozilla Developer Network (MDN), and educational materials by experts such as Jen Simmons help developers, designers, and content creators understand and effectively implement accessibility standards. Performance Testing Varied Approaches to Performance Testing by QA Team For performance testing, QA teams adopt diverse strategies. The aim is to identify potential bottlenecks and areas for improvement without relying solely on specific development tools or frameworks. Challenges in Assessing Website Performance Assessing website performance is challenging due to unpredictable factors like device capabilities, network conditions, and background processes. This unpredictability makes performance testing unreliable, as test results can vary significantly. For example, using tools like Puppeteer can be affected by device performance, background processes, and network stability. At Belitsoft, we address performance testing challenges by employing the Pareto Principle. This allows us to enhance efficiency while maintaining the quality of our work. Learn how Belitsoft applies the Pareto principle in custom software testing in this article. Common Tools for Performance Testing in Pre-Production During the pre-production phase, QA teams use a suite of tools like GTMetrix, Lighthouse, and Google Speed Insights to thoroughly assess website speed and responsiveness. For example, Lighthouse provides direct feedback on areas requiring optimization for metrics such as SEO and load times. It highlights issues such as oversized fonts that slow down the site, ensuring QA teams address specific performance problems.   The Importance of Monitoring API Latencies for User Experience However, API latencies—delays in response time when the front end makes requests to backend services—are critical for shaping user experience but not always captured by traditional page speed metrics. Teams can establish early warning systems for detecting performance degradation or anomalies by integrating alarms and indicators into their comprehensive API testing strategy, enabling timely interventions to mitigate impacts on the user experience.  Tools for Monitoring Bundle Size Changes During Code Reviews Integrating a performance monitoring tool that alerts the QA team during code reviews, like GitHub pull requests, about significant bundle size changes is essential. This tool automatically analyzes pull requests for increases in the total bundle size—comprising JavaScript, CSS, images, and fonts—that exceed a predefined threshold. This guarantees that the team is promptly alerted to potential performance implications. Unit Testing End-to-End vs. Unit Tests End-to-end testing simulates real user scenarios, covering the entire application flow. They are effective in identifying major bugs that affect the user's experience across different components of the application. In contrast, unit tests focus on individual components or units of code, testing them in isolation. Written primarily by developers, unit tests are essential for uncovering subtle issues within specific code segments, complementing end-to-end tests by ensuring each component functions correctly on its own. Immediate Feedback from Unit Testing QA teams benefit from the immediate feedback loop provided by unit testing, which allows for quick detection and correction of bugs introduced by recent code changes. This feedback enhances the QA team's confidence in the code's integrity and mitigates deployment anxieties. Challenges of Unit Testing in Certain Frameworks QA professionals face challenges with unit testing in frameworks like Angular or React, where unit testing can be complicated by issues with DOM APIs and the need for extensive mocking. The dynamic nature of these frameworks causes frequent updates to unit tests, making them quickly outdated. The React codebase is often not "unit test friendly," and time constraints make it difficult to invest in rewriting code for better testability. Consequently, testing often becomes a lower priority. The Angular testing ecosystem, particularly tools like Marbles for testing reactive functional programming, may be complex and not intuitive. Therefore, unit testing is typically reserved for small, pure utility functions. Visual Testing/Screenshot Testing  In front-end development, various methods are employed for maintaining visual integrity of websites. QA teams adopt methods beyond the informal "eyeballing" approach to ensure visual consistency with design specifications. This technique involves directly comparing the developed site with design files, like Figma files or PDFs, by placing them side by side on the screen to check for visual consistency. QA professionals employ tools to simulate different screen sizes and resolutions. This effort is part of a broader user interface testing strategy, which helps to check if websites are responsive and provide a good user experience on different devices. Testing includes mobile-first optimization and compatibility with desktops. Automation is important for efficient and thorough visual verification. Advanced testing frameworks, such as Jest, renowned for its snapshot testing feature, and Storybook for isolated UI component development, automate visual consistency checks. These tools seamlessly integrate into CI/CD pipelines, identifying visual discrepancies early in the development cycle. Automated visual testing ensures UI consistency and alignment with design intentions, improving front-end development quality. QA teams play a critical role in delivering visually consistent and responsive web applications that meet user expectations, improving product quality and reliability. Achieving the desired software quality requires integrating a variety of testing strategies and leveraging QA expertise. Our partnership with an Israeli cybersecurity firm demonstrates these strategies in practice. Learn how we established a dedicated offshore team to handle extensive software testing, which resulted in improved efficiency and quality. This effort highlighted the value of assembling a focused team and the practical benefits of offshore QA testing. Belitsoft, a well-established software testing services company, provides a complete set of software QA services. We can bring your web applications to high quality and reliability standards, providing a smooth and secure user experience. Talk to an expert for tailored solutions.

Why We Offer Regression Testing Users expect each software update, interface change, or new feature to arrive quickly and work correctly the first time. To meet that expectation, most companies now use Continuous Integration and Continuous Deployment pipelines. Rapid delivery is safe only when every release is validated by continuous, automated testing. For this reason, regression testing - rerunning key functional and non-functional checks after every change - has become the industry's best practice. In today's era of digital transformation, software updates are expected. However, each new release carries the risk that existing functionality may "regress" - slip back into failure - if changes introduce unintended side effects. That is why regression testing preserves product integrity as code evolves. Regression testing is the discipline of re-running relevant tests after every code change to confirm that the software still behaves exactly as it did before the change. Its value is in preventing the return of previously fixed defects and in catching new side effects that a change may introduce. Even a minor refactor, library upgrade, or configuration tweak can ripple through a large codebase. For this reason, regression testing is considered as important as unit, integration, or new feature testing. Regression testing asks: after we add, tweak, or fix something, does everything that used to work still work? Because modern applications - from a single-page web app to an end-to-end business workflow - depend on interconnections, even a minor change can ripple outward and disrupt core user journeys. Systematic, repeatable retests after every change catch those surprises early, when a fix is cheap, rather than in production, where every minute of downtime is costly. With hands-on experience, our dedicated QA team verifies new features without disrupting current workflows. We support fast release cycles, legacy systems, and compliance-driven projects. Regression Testing Benefits You hand off all script maintenance, shorten development cycles, and let your developers focus on features rather than firefighting. This produces faster daily deployments, lower costs, and eliminates unexpected issues in production. Our automated regression testing enables development teams to innovate at full speed. Our clients have reduced manual regression effort and achieved perfect customer satisfaction scores after adopting our service.  Other clients have used the same continuous quality checks to accelerate multi-cloud projects and keep release costs predictable.  Regression Testing Strategies Teams usually begin with a full rerun of the entire test suite after each build, because it guarantees maximum coverage. However, the time cost grows quickly as the product expands. To keep feedback fast, larger projects map each test case to the files or functions it exercises, and then run only the tests that intersect with the latest commit. When even selective reruns take too long, tests are ranked so that those covering user-facing workflows, security paths, and recently fixed bugs execute first, while low-risk cases finish later without blocking deployment. In practice, organizations blend these ideas: a small, high-value subset protects the main branch, while the broader suite runs in parallel or overnight. Because no team has infinite time or budget, effective regression strategies are risk-based.  Prioritize:  Core flows and dependencies - login, checkout, payments - where failure directly hurts revenue or credibility.  Recently introduced or historically bug-prone areas.  Environment-sensitive logic - integrations, date/time calculations, or configurations that behave differently across browsers or devices. Types Of Regression Testing Corrective regression testing When the requirements have not moved an inch, QA engineers turn to corrective regression testing. They simply rerun the existing test cases after a refactor or optimization to prove the system still behaves exactly as before. If a developer rewrites a query so it runs in half the time, corrective tests verify that the search results themselves do not change. Retest-all regression testing At the opposite extreme is retest-all regression testing. After a large architectural shift or simultaneous changes in many critical areas, every module and integration path is exercised from scratch. It is expensive, but it is also the surest way to spot hidden side effects - much like a hotel-booking platform that retests its entire stack after migrating to a new inventory service. Selective regression testing For smaller, well-scoped changes, teams prefer selective regression testing. Here, they run only the cases that cover the altered code and its immediate neighbors. A patch to the payment gateway, for example, triggers checkout and billing tests but leaves unrelated streaming or recommendation functions untouched, saving hours of execution time. Progressive regression testing When the product itself grows new capabilities or its behavior is redefined, progressive regression testing becomes necessary. Engineers update existing test cases so they describe the new expectations, then rerun them. Without that refresh, outdated tests could pass even while defects slip by. Adding a live-class feature to an e-learning site demands such updates so the suite now navigates to and interacts with live sessions. Partial regression testing Sometimes a tiny fix needs only a narrow confirmation that it affects nothing else. Partial regression testing zeroes in on the surrounding area to ensure the change is contained. After resolving a coupon bug, testers run through the discount path and a short section of checkout, just far enough to verify no other pricing or loyalty logic was disturbed. Unit regression testing Developers often want immediate feedback on a single function or class, and unit regression testing delivers it. By isolating the code under test, they can hammer it with edge-case data in a few seconds. Complete regression testing When a major release cycle wraps up - one that has modified many subsystems - the team performs complete regression testing. This holistic sweep establishes a fresh baseline that future work will rely on. A finance application that overhauls both its user interface and reporting engine typically resets its benchmark this way before the next sprint begins. Regression Testing Automation Automation makes the process sustainable.  Manual passes are slow, error-prone, and do not scale to the thousands of permutations found in modern web and mobile applications.  Automated scripts run unattended, in parallel, and with consistent precision. This frees quality engineers to design new coverage instead of repeating old checks. Manually re-executing hundreds or thousands of scenarios each sprint is tedious, error-prone, and unsustainable as the test suite grows. Once scripted, automated regression tests can run 24×7, triggered automatically in CI/CD pipelines after every commit, nightly build, or pre-release checkpoint.  Parallel execution reduces feedback loops to minutes, accelerating release cadence while freeing testers to focus on higher-value exploratory and usability work that still demands human judgment. Automation works when tests are stable, repetitive, data-driven, or performance-oriented. Manual checks remain superior for exploratory charters, nuanced UX assessments, or novel features that change rapidly. Regression testing vs retesting Retesting (or confirmation testing) re-runs the exact scenarios that previously failed, to confirm that a specific defect is gone. Retesting verifies that a single reported defect is fixed, while regression testing checks that the entire application still works after any change, including that fix. Regression testing, in contrast, hunts for unexpected breakage across all previously passing areas. The former is narrow and targeted, the latter is broad, comprehensive, and - because of its repetitive nature - ideal for automation. Skipped regression tests can allow old bugs to resurface or new ones to slip through. For this reason, automated regression suites are viewed as a fundamental safeguard for reliable, continuous delivery. Types of Regression Failures Three patterns of regression failures typically appear.  A local regression occurs when the module that was modified stops working.  A remote regression happens when the change breaks an apparently unrelated area that depends on shared components or data.  An unmasked regression arises when new code reveals a flaw that was already present but hidden.  A sound regression testing practice is expected to detect all three. Maintaining a regression suite Every resolved defect should add a corresponding test so the issue cannot recur unnoticed. New features and code paths also require tests to keep coverage up to date. Environments must remain stable during a run. Version-controlled infrastructure, isolated databases, and tagged builds help ensure that failures reflect real defects rather than mismatched dependencies. Successful teams follow a disciplined, continuously improving loop: Analyze risk to decide where automation delivers the most value. Set measurable goals - coverage percentage, defect-leakage rate, execution time - to track ROI. Select fit-for-purpose tools that match the tech stack and tester skill set. Design modular, reusable tests with stable locators and shared components to minimize maintenance. Integrate into CI/CD, execute in parallel, and surface clear, actionable reports so defects move swiftly into the backlog. Maintain relentlessly - retire obsolete cases, add new ones, and refine standards so the suite grows in value. How Belitsoft Can Help Belitsoft provides automated regression testing. Our senior test engineers customize the workflow for your environments and toolsets. Throughout the process, your business team receives hands-on support for acceptance testing, and stakeholders get a concise go/no-go report for every release. Our testing methodology integrates functional, performance, and security testing across web, mobile, and desktop applications. We provide automated regression testing tailored to your stack. Anyone on your team can read, execute, or even create new scenarios, with no hidden "black box". Our senior test engineers build end-to-end automation across API, UI, and unit tests that are mapped directly to your requirements. We define the modules most likely to fail, and obsolete tests to remove so the test suite remains efficient. Our approach is designed to fit any delivery model, including waterfall, Agile, DevOps, or hybrid. We analyze each change for impact, define both positive and negative test scenarios, and track every defect until it is resolved and verified. If you want your product team to move faster, book a demo and see how affordable, reliable testing coverage can help your company scale without the bugs. Need expert support to improve quality and speed of delivery? Our offshore software testing engineers tailor regression coverage to your stack, align it with your workflows, and deliver clear release readiness insights. Let’s talk about how we can help with your testing process cost-effectively.