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| Criterion |  Operations After-Action Review |  Product Discovery Riskiest Assumption Test |  Product Discovery Assumption Mapping |  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 an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | 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 | Medium | Medium | Medium |
Timedifferent | 20-45 min | 1-2 Wochen pro Iteration | 45-60 min | 1-5 Tage |
Participantsdifferent | 3-12 | 2-6 | 2-8 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Lessons learned, Action items, Event summary | Prioritized Assumption List, Test Plan, Results Report | Assumption map, Test backlog, Risk ranking | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | LearningOperationsImprovement | ExperimentsValidationDiscoveryAssumptions | AssumptionsRiskExperimentsValidation | ValidationExperimentsDemandDiscovery |