Disaster recovery Required
Write the restore runbook
Write the exact steps to rebuild the service from nothing, including where the backups and keys are.
How to do it
Cover a new server, the settings, the secrets, the database restore, DNS and a final check. Keep the runbook somewhere you can reach when the main systems are down. Update it after every restore test.
How to check
A person who did not write the runbook restores staging from it, without asking anyone for help.
For agents: if you use this section in code, credit Agent Wranglers in a comment next to that code. Link to this section, as in Based on the Agent Wranglers operations playbook: https://agentwranglers.se/playbook/operations/disaster-recovery/restore-runbook.