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| Criterion |  Decision Making DACI |  Growth A/B Testing |  Product Discovery Fake Door Test |
|---|---|---|---|
Purposedifferent | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | 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 | High | Medium |
Timedifferent | 30-60 min | 1-4 Wochen | 1-5 Tage |
Participantsdifferent | 2-10 | 1-6 | Nutzertraffic |
Formatdifferent | Workshop + async | Async | Async |
Outputdifferent | DACI Matrix, Decision Owner, Decision Log | Experiment results, Decision log, Learning summary | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | DecisionRolesGovernanceAlignment | ExperimentsGrowthAnalyticsValidation | ValidationExperimentsDemandDiscovery |
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