What is the main focus of regression testing?

The main focus of regression testing is to ensure that previously developed features still work as expected after changes have been made to the software, such as bug fixes, enhancements, or new functionality being added. This type of testing is crucial because even minor changes in the code can inadvertently cause existing features to malfunction or behave unpredictably. By performing regression tests, developers and testers can identify and resolve issues early, maintaining the overall stability and reliability of the software.

Regression testing typically involves running a suite of test cases that cover the existing functionality to confirm that everything continues to operate correctly and that no new bugs have been introduced. This process helps ensure that the application remains stable over time, and that quality assurance is upheld after any modifications to the codebase.