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| Criterion |  Decision Making Decision Tree |  Architecture Architecture Decision Record |  Decision Making DACI |
|---|---|---|---|
Purposedifferent | For decisions with follow-on paths and dependencies, a linear comparison is often not enough. A Decision Tree shows how options branch under conditions and which consequences hang on each branch. | 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. | 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. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 30-90 min | 15-45 min | 30-60 min |
Participantsdifferent | 1-6 | 1-3 | 2-10 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Decision Tree, Option Map, Assumption List | ADR File, Decision Log, Rationale | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | DecisionTreeOptions | ArchitectureRationaleDocumentationGovernance | DecisionRolesGovernanceAlignment |
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