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| Criterion |  DevOps Blameless Postmortem |  Systems Thinking Evaporating Cloud |  DevOps Game Day |  Operations After-Action Review |
|---|---|---|---|---|
Purposedifferent | 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. | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. | 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 missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. |
Complexitydifferent | Medium | Medium | High | Low |
Timedifferent | 30-90 min | 60-120 min | Halber Tag | 20-45 min |
Participantsdifferent | 3-12 | 2-8 | 5-20 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments | Simulation Notes, Gaps List, Updated Runbooks | Lessons learned, Action items, Event summary |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Theory of ConstraintsAssumptionsSystems thinking | ResilienceOperationsIncident | LearningOperationsImprovement |