Here's the structural difference. A compliance system is the operational machinery that ensures the organization is actually doing what its policies require, in real time, across every transaction, decision, and process the policies cover. It includes the controls, the workflows, the system configurations, the approval chains, the documentation triggers, the monitoring mechanisms, and the feedback loops that catch deviations before they become findings. A compliance system runs continuously, in the background, and produces evidence as a byproduct of normal operations.