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| Criterion |  Growth A/B Testing |  Decision Making DACI |  Architecture Architecture Decision Record |
|---|---|---|---|
Purposedifferent | 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. | 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. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. |
Complexitydifferent | High | Low | Low |
Timedifferent | 1-4 Wochen | 30-60 min | 15-45 min |
Participantsdifferent | 1-6 | 2-10 | 1-3 |
Formatdifferent | Async | Workshop + async | Async |
Outputdifferent | Experiment results, Decision log, Learning summary | DACI Matrix, Decision Owner, Decision Log | ADR File, Decision Log, Rationale |
Tagsno overlap | ExperimentsGrowthAnalyticsValidation | DecisionRolesGovernanceAlignment | ArchitectureRationaleDocumentationGovernance |
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