What is Regression

Regression testing is a software testing technique that aims to ensure that recent changes or modifications to a software application have not adversely affected its existing functionality. It involves re-running previously executed test cases to verify that the existing features still work as expected after code changes, bug fixes, or system updates. The primary goal of regression testing is to catch any unintended side effects or regressions introduced by new code changes, thereby maintaining the overall quality and reliability of the software product. Regression testing can be performed manually or automated, depending on the size and complexity of the application. It is typically conducted as part of the software development lifecycle, with tests being executed iteratively throughout the development process to identify and fix issues early on, minimizing the risk of software defects in production.