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| Criterion |  DevOps Blameless Postmortem |  Operations After-Action Review |  DevOps Game Day |  Operations Process Mapping |
|---|---|---|---|---|
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. | 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. | 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. | With a confusing workflow that has many handoffs, the method makes the actual process visible. It shows where work is passed on, delayed, or duplicated, so improvement targets the right spots. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 30-90 min | 20-45 min | Halber Tag | 1-3 h |
Participantsdifferent | 3-12 | 3-12 | 5-20 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Lessons learned, Action items, Event summary | Simulation Notes, Gaps List, Updated Runbooks | Process Map, Handoff List, Improvement Backlog |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | LearningOperationsImprovement | ResilienceOperationsIncident | ProcessOperationsImprovement |