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| Criterion |  Operations A3 Problem Solving |  DevOps Blameless Postmortem |  Operations Runbook |
|---|---|---|---|
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. | 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. | 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. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 45-90 min | 30-90 min | 20-60 min |
Participantsdifferent | 2-5 | 3-12 | 1-4 |
Formatdifferent | Workshop + async | Workshop + async | Async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Postmortem Doc, Action Items, Timeline | Runbook, Checklist, Escalation Path |
Tagsno overlap | LeanProblem solvingCoachingOperations | Site Reliability EngineeringIncidentLearningReliability | OperationsReliabilityDocumentation |
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