The use of approval testing can simplify the testing process by capturing and approving system outputs, reducing the need to manually update test cases with new expected outputs. Approval testing is particularly useful for quickly capturing the existing behavior of undocumented legacy code, fostering collaboration between developers and testers, and providing a safety net for refactoring or enhancements without introducing unintended consequences. By integrating approval testing into your workflow, you can automate the process of verifying system output, reduce test execution time, and improve clarity in presenting results. The process involves recording an approved output, automating a test to capture the output produced during the test run, comparing the result with the approved output, reviewing and updating the approved file as needed, and combining approval testing with continuous integration pipelines to ensure changes are validated automatically.