Mitigation vs Resolution
Mitigation stops the bleeding (rollback, failover, scale up). Resolution is the permanent fix. During an incident, mitigate first — resolution can wait until the customers are unaffected.
Source
- Google SRE Book — Managing Incidents
Related terms
Incident
An unplanned event that disrupts service or threatens to.
Severity (SEV-1 to SEV-4)
A standardized scale for how serious an incident is.
Incident Commander (IC)
The single person who owns coordination of an incident end-to-end.
Tech Lead (during incident)
The engineer actively diagnosing and fixing the problem during an incident.
Comms Lead
Owns customer-facing communication during an incident — status page updates, in-product banners, support te…
On-Call Rotation
A scheduled rotation of engineers who are responsible for responding to alerts outside business hours.