Every engineering team I have read about that built continuous compliance the right way reports the same three things: audit prep drops from weeks to hours, evidence requests get answered with a query instead of a scramble, and the compliance team stops being the group everyone dreads talking to.The stack that gets you there in 2026 is not experimental anymore. Every piece is production-grade, mostly open source, and the pattern is documented in enough public engineering blogs that you can copy it without reinventing anything. This is a walkthrough of what that stack actually looks like, what each layer does, and the concrete benefit each one produces.