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| Criterion |  Operations After-Action Review |  Product Discovery Assumption Mapping |  DevOps Blameless Postmortem |  Product Discovery Riskiest Assumption 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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | 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 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. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 20-45 min | 45-60 min | 30-90 min | 1-2 Wochen pro Iteration |
Participantsdifferent | 3-12 | 2-8 | 3-12 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Lessons learned, Action items, Event summary | Assumption map, Test backlog, Risk ranking | Postmortem Doc, Action Items, Timeline | Prioritized Assumption List, Test Plan, Results Report |
Tagsno overlap | LearningOperationsImprovement | AssumptionsRiskExperimentsValidation | Site Reliability EngineeringIncidentLearningReliability | ExperimentsValidationDiscoveryAssumptions |