Runbook
In plain terms
A documented procedure for handling an operational task.
Going deeper
A runbook gives step-by-step instructions for routine operations or incident response, so anyone can execute consistently. It captures operational knowledge.
Under the hood
Increasingly automated (runbook automation); reduces reliance on individual expertise during incidents.
Examples
Incident response, on-call procedures, recovery steps, ops documentation.
Think of it like...
Like an emergency procedure card that anyone on duty can follow under pressure.