Description: Sanity testing is a quick check to see if a particular function or bug fix works as expected. This type of testing is typically performed after changes are made to the software, such as bug fixes or new features, and aims to ensure that the modifications have not introduced new issues into the system. Unlike exhaustive testing, which seeks to detect a wide range of errors, sanity testing focuses on validating specific aspects of the software. It tends to be less formal and quicker, allowing development teams to get immediate feedback on the stability of the software. These tests are crucial in agile development environments, where changes are implemented frequently and speed of delivery is essential. By conducting sanity tests, teams can quickly identify if the software remains functional after modifications, helping to maintain product quality and reduce the risk of failures in production.