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| Criterion |  Operations Runbook |  DevOps Game Day |  Operations Gemba Walk |  DevOps Blameless Postmortem |
|---|---|---|---|---|
Purposedifferent | For recurring operational tasks or incidents, the method keeps solid action logic ready. It reduces uncertainty when time pressure, role changes, or rare situations demand fast access. | In preparing for rare incidents, the method tests response capability under controlled conditions. It shows where assumptions about stability, roles, and recovery are too optimistic. | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. |
Complexitydifferent | Low | High | Low | Medium |
Timedifferent | 20-60 min | Halber Tag | 30-120 min | 30-90 min |
Participantsdifferent | 1-4 | 5-20 | 2-6 | 3-12 |
Formatdifferent | Async | Workshop | Workshop | Workshop + async |
Outputdifferent | Runbook, Checklist, Escalation Path | Simulation Notes, Gaps List, Updated Runbooks | Observation Notes, Improvement Ideas | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | OperationsReliabilityDocumentation | ResilienceOperationsIncident | LeanObservationProcessOperations | Site Reliability EngineeringIncidentLearningReliability |