The most dangerous thing in a server room or wiring closet is often the phrase, “Don’t touch that.” It’s usually muttered with a half-joke and a grimace. It refers to the old box that "still works," runs a critical piece of operational software, and has survived so many temporary fixes, workarounds, and custom configurations that nobody on your team feels confident changing it anymore. That isn't just old technology. That is legacy tech debt—old hardware or software that has