Description: Software regression testing is a type of software testing that ensures that previously developed and tested software still works after a change. This type of testing is performed to detect errors that may have been introduced into the system as a result of modifications to the code, such as adding new features, fixing bugs, or changing configurations. Regression testing is essential in the software development lifecycle as it ensures that new implementations do not negatively affect existing functionalities. It can be performed manually or automated, with automated testing being the most efficient for large-scale projects where a large number of tests need to be executed repeatedly. Regression testing helps maintain software quality and ensures that the final product meets user requirements and expectations. Additionally, it is an integral part of agile and DevOps methodologies, where changes to the software are frequent and the system is expected to remain stable over time.
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