Documentation, Change Management, and Backups

Operational documentation records what happened, why a change was needed, its impact, and how to restore service. It turns a one-time fix into supportable knowledge.

1. Define the change scope, owner, risk, and affected systems.
2. Prepare a backup and a practical rollback path.
3. Test or peer-review when the impact warrants it.
4. Implement during an appropriate window and monitor the result.
5. Verify service, document the outcome, and update operational records.

A backup is useful only when restoration has been planned and tested. A rollback plan returns a changed system to a known state; it does not replace an independent recovery copy.