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| Criterion |  Operations After-Action Review |  Product Discovery Learning Card |  DevOps Blameless Postmortem |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 20-45 min | 25-40 min | 30-90 min | 1-5 Tage |
Participantsdifferent | 3-12 | 1-5 | 3-12 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Lessons learned, Action items, Event summary | Learning Card with evidence and next action | Postmortem Doc, Action Items, Timeline | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | LearningOperationsImprovement | ExperimentsValidationDiscoveryLearning | Site Reliability EngineeringIncidentLearningReliability | ValidationExperimentsDemandDiscovery |