Having a QA team is like having an Ops team with stuff being 'thrown over the wall' to the downstream. There's two kinds of tests. Regression testing, that sho

Having a QA team is like having an Ops team with stuff being 'thrown over the wall' to the downstream. There's two kinds of tests. Regression testing, that should be automated and written and maintained by devs. New feature or change testing should be done by those that defined them, namely Product people. In the best case it's an iterative and collaborative process, where things can be evaluated in dev/test environments, staging environments, or production for beta flag enabled test users.