What is the objective of regression testing?

The objective of regression testing is specifically to ensure that new code changes have not introduced any new defects or negatively impacted the existing functionalities of the software. This is crucial in the software development lifecycle, especially when modifications are made, such as bug fixes, enhancements, or new features. By re-running previously completed tests, regression testing helps confirm that the software continues to operate as intended even after modifications, thereby maintaining its reliability and performance.

This process is typically a systematic way of validating that ongoing development does not disrupt the already established functionality, providing confidence to both developers and users that the quality of the product remains intact despite changes.