Why is manual testing still important in software development?

Software testing is essential for maintaining application quality as well as minimizing errors. Although many testing procedures have been reduced by automation, manual testing is still a crucial step in the software development lifecycle. The article will examine five main arguments for the continued value of manual testing tools in spite of test automation advancements.


The user experience, or how easy as well as logical an application is for users to engage with, is one among the most crucial parts of any product. The capacity of automated testing to assess the entire user experience from the emotional as well as cognitive standpoint is constrained. The user experience can only be properly validated by manual testing, carried out by actual users who use the product as intended. Testers can offer input on matters such as usability, along with accessibility, as well as learnability, along with the way the interface works from the viewpoint of a real user. It is challenging to duplicate this human-centered assessment of the user experience with automation alone.

  • Testing Edge Cases


Automated test scripts, regardless of how comprehensive, will never cover every situation, environment, or a configuration that real users could come across. Testers can intentionally investigate edge cases, unusual processes, along with unanticipated user mistakes, as well as other scenarios through manual testing that might not have been considered during development or a automated test design. To find flaws or crashes that only happen in peculiar circumstances, testers can experiment with things like altering system settings, adjusting network connections, as well as adding new variables. 

  • Adapting to Changing Requirements


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Throughout the development process, requirements for the software applications are always changing in response to fresh perspectives, along with user input, as well as shifting business requirements. Compared to manual testing, automated testing is typically more strict as well as less able to adjust to changing requirements. It is easier for testers to adjust their test strategy as well as priority in response to newly or updated requirements found during implementation. Through exploratory testing, they may also swiftly test new features or suggested adjustments, which can aid in road mapping as well as product development.

  • Testing Non-Functional Requirements


Software testing attempts to confirm that programs satisfy significant non-functional criteria including performance, security, as well as accessibility, along with maintainability in addition to verifying functionality. Numerous facets of the non-functional quality are challenging to quantify through programming as well as are best assessed by humans. For instance, manual testing enables assessing an application’s perceived responsiveness, along with stability, as well as security from the viewpoint of the user. 

  • Catching Errors Missed by Other Testing


There is no testing strategy that can ensure that all defects are found. Certain faults could manage to evade detection even in the presence of thorough unit, integration, as well as automated testing. Because human testers approach testing from a different viewpoint than automation, manual testing acts as a crucial safety net. Because testing techniques differ in terms of testing strategy, coverage, or prioritization, testers might detect flaws that other testing methods have missed. Manual testing identifies issues in applications that are missed by more technical testing methods like unit testing code or a service integration testing since it tests the program from the perspective of the user. 

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Even though test automation has many advantages, testing tools for manual testing are still essential to software development because it can verify the user experience, investigate edge cases, adjust to changing requirements, evaluate crucial non-functional quality attributes, as well as identify problems that other testing techniques might have missed. The most comprehensive assessment of software quality is obtained through the combination of automated along with the manual testing. People testing software by hand will always be an essential component of the testing process as long as software is designed with humans in mind.