Too Long; Didn't Read
<a href="http://www.softwaretestinghelp.com/regression-testing-tools-and-methods/" target="_blank">Regression testing</a> helps development teams validate that when they fix bugs or add new features, existing functionality of their product still works. Typically, these tests are kicked off as part of a <a href="https://www.mabl.com/blog/what-is-cicd" target="_blank">continuous integration</a> (CI) process so that engineers know very quickly if anything broke based on their new commits. Hopefully not, but for sure it happens.