Software regression testing success story

Many products go through several releases, and can be ported to many platforms (hardware and/or operating system). Every line of code written or modified offers opportunity for bugs to creep in. Regression testing is the way to catch a large class of these bugs quickly and efficiently. Regression testing focuses on ensuring that (theoretically) everything that used to work still works. For six years, nine software releases, ports to one new operating system and three new hardware platforms, our product line has been using a process that includes the use of a regression test system. Regression test is a worthwhile ongoing investment