What is the primary objective of regression testing?

The primary objective of regression testing is to verify that new errors have not been introduced into existing functionalities after changes such as enhancements, bug fixes, or other updates have been made to the software. As software evolves, it is crucial to ensure that new code does not adversely affect existing features, which can lead to unexpected behavior or failures. Regression testing involves re-running previous test cases to validate that the previously working aspects of the application continue to function as intended, thereby maintaining software integrity throughout its development lifecycle.

This testing is essential for maintaining quality and reliability in software applications, ensuring that improvements or changes do not compromise the user experience or application performance. By focusing on verifying that no new defects have occurred, regression testing serves as a safeguard, providing confidence that existing functionalities remain intact in the face of changes.