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| Criterion |  DevOps Blameless Postmortem |  Product Discovery Pretotyping |  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. | Pretotyping clarifies whether a customer problem and solution idea create enough real demand. It separates problem, assumption, solution, and evidence, and captures the result as a pretotyping sketch, test setup, and conversion data. | 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 | Low | High | Low |
Timedifferent | 30-90 min | Stunden bis wenige Tage | Halber Tag | 20-45 min |
Participantsdifferent | 3-12 | 1-4 | 5-20 | 3-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Pretotyping sketch, Test setup, Conversion data, Go or no-go decision | Simulation Notes, Gaps List, Updated Runbooks | Lessons learned, Action items, Event summary |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | ValidationDemandMVP | ResilienceOperationsIncident | LearningOperationsImprovement |