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| Criterion |  Operations After-Action Review |  Product Discovery Test Card |  Product Discovery Experiment Canvas |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
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 Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | When experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. | When several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. |
Complexitydifferent | Low | Low | Low | Medium |
Timedifferent | 20-45 min | 20-35 min | 30-60 min | 45-75 min |
Participantsdifferent | 3-12 | 1-5 | 1-5 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Lessons learned, Action items, Event summary | Test Card with a pre-set threshold | Completed Experiment Canvas, Success Metric | Test Matrix, Test Plan |
Tagsno overlap | LearningOperationsImprovement | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryOptions |