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| Criterion |  Operations After-Action Review |  Agile Sprint Retrospective |  Product Discovery Learning Card |  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. | When a sprint is over and friction shouldn't simply be carried forward, it opens the view onto collaboration and patterns. It creates space to see causes and changes together. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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 | Low | Medium |
Timedifferent | 20-45 min | Up to 3 hours for a one-month Sprint; shorter Sprints are usually shorter | 25-40 min | 1-5 Tage |
Participantsdifferent | 3-12 | Scrum Team | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Async |
Outputdifferent | Lessons learned, Action items, Event summary | Improvement actions, Team agreements | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | LearningOperationsImprovement | RetrospectiveImprovementLearning | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |