runbook
/RUN-book/ · noun · Development · Origin: 2000
Definitions
A documented set of step-by-step procedures for handling specific operational scenarios, from routine maintenance tasks to incident response. Runbooks reduce the cognitive load on on-call engineers by providing pre-written, tested procedures. The best runbooks include decision trees, exact commands to run, and criteria for escalation.
In plain English: A step-by-step instruction manual for handling common operational problems, so the person on-call at 3am doesn't have to figure everything out from scratch.
Example: The new on-call engineer resolved the disk space alert in ten minutes by following the runbook, instead of panicking at 3am like I did my first time.