The primary goal of regression testing is to:

The primary goal of regression testing is to ensure that existing functionality has not been compromised after changes, such as enhancements, patches, or bug fixes, have been made to the software. This type of testing focuses on verifying that the previous functionalities still work as intended and that no new issues have been introduced as a result of the recent changes.

Regression testing involves re-running previously completed test cases to confirm that the software continues to behave correctly. It is essential for maintaining the integrity of the software product, especially as it evolves over time. By conducting regression tests, testers can catch any unintended side effects of code modifications that could adversely affect the user experience or system performance.

While assessing new functionality and identifying bugs in new code are important in their own right, those activities fall under different testing categories, such as functional testing or exploratory testing. Usability testing, on the other hand, focuses on how user-friendly and effective the software is for end-users, which is not the primary focus of regression testing. Thus, ensuring that existing functionality is preserved is the cornerstone of regression testing.