Why manual testing is essential in ensuring product quality

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 Automated testing and DevOps have become increasingly popular, manual testing still plays an essential role in ensuring product quality. A good manual testing team can provide valuable feedback on the user experience, identify edge cases and usability issues, and ensure that the product meets business requirements.

1. Exploratory testing:

Automated tests are great at executing repetitive and predictable scenarios, but they may not be able to catch unexpected issues. Exploratory testing allows testers to explore the application, its functionalities and use cases, and to identify edge cases, usability issues, or any other issues that automated tests might miss. For example, a tester might perform exploratory testing on a web application by trying to use it with an assistive technology such as a screen reader or navigating the site with a keyboard-only to identify accessibility issues.


2. User experience:

A manual tester can provide valuable feedback on the user experience of an application. Testers can identify user interface issues, design flaws, and other issues that can impact the user experience. For example, a tester might provide feedback on a mobile app's user interface, suggesting changes to improve usability, or identifying areas where the interface is not intuitive.


3. Regression testing:

Regression testing ensures that previously fixed bugs don't reappear after code changes or updates. While automated tests are good for catching regression bugs, manual testing can help identify the root cause of the issue. For example, a manual tester might investigate a regression bug and find that the root cause is an issue with the database schema, which would require a database change to fix.


4. Ad hoc testing:

Ad hoc testing can be used to quickly identify a specific issue that requires immediate attention. Manual testers can help developers quickly isolate and reproduce the issue, so that it can be addressed promptly. For example, a tester might perform ad hoc testing on an e-commerce website to identify why customers are having trouble completing a checkout process, and work with developers to find a solution.


5. Business requirements:

Manual testing can ensure that the product meets the business requirements. Testers can ensure that the application meets the customer's needs, performs as expected, and provides the desired results. For example, a tester might perform manual testing on a financial application to ensure that it meets compliance regulations and that calculations are accurate.


6. Team collaboration:

Manual testers work closely with developers, product owners, and other stakeholders, providing feedback and insights that can help improve the product. Manual testers can help bridge the communication gap between different teams and ensure that everyone is on the same page. For example, a tester might work with developers to understand how a new feature works, and provide feedback on how it might impact other areas of the application.

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