What would happen if air traffic controllers stopped working? Two aircraft approach each other at the same altitude, a landing and a take-off overlap on the same runway, nobody glances at the radar screen. The result would not just be chaos but a major catastrophe. This is exactly the situation that threatens IT when monitoring is missing!
An IT environment also needs an air traffic controller who has an overview of all states in the system at all times. What is the status of the servers? Are the logs in order or are there signs pointing to a "crash"? Are all programs running smoothly? If nobody takes on the role of the air traffic controller, relevant problems will sooner or later collide and result in full-blown production and service outages.
