On a host, host content change requests are intercepted in real-time. In a tracking mode, the change requests are logged and allowed to take effect on the host. In an enforcement mode, the change requests are logged and additionally compared against authorized change policies and a determination is made whether to allow the change to take effect or to block the changes, thereby enforcing the authorized change policies on the host. Tracking and enforcement can be done in real-time. In either mode and at any time, the logged changes can be reconciled against a set of approved change orders in order to identify classes of changes, including changes that were deployed but not approved and changes that were approved but not deployed.