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| Criterion |  Operations A3 Problem Solving |  Operations Runbook |  DevOps Game Day |  DevOps Blameless Postmortem |
|---|---|---|---|---|
Purposedifferent | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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. | 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 | Medium | Low | High | Medium |
Timedifferent | 45-90 min | 20-60 min | Halber Tag | 30-90 min |
Participantsdifferent | 2-5 | 1-4 | 5-20 | 3-12 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Runbook, Checklist, Escalation Path | Simulation Notes, Gaps List, Updated Runbooks | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | LeanProblem solvingCoachingOperations | OperationsReliabilityDocumentation | ResilienceOperationsIncident | Site Reliability EngineeringIncidentLearningReliability |