QA Testing involves developing test cases using various test design techniques to keep them fresh and actively identifying defects.
New prerequisites added to the system require creating additional test cases.
To optimize the performance requires test case updates to ensure that performance testing is adequate.
End users may change over time, thus need to update test cases to ensure adequate testing coverage.
Integrating the latest features require updates to test cases to leverage new testing capabilities.
New risks may be identified during the development process that require additional test cases to mitigate.
Some test cases may become inefficient or redundant over time, requiring updates or removal to optimize testing.