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| Criterion |  Architecture Architecture Decision Record |  Decision Making Delphi Method |  Decision Making DACI |
|---|---|---|---|
Purposedifferent | 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. | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | 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 | Low | High | Low |
Timedifferent | 15-45 min | 1-4 Wochen | 30-60 min |
Participantsdifferent | 1-3 | 6-30 Experten | 2-10 |
Formatdifferent | Async | Async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Expert Forecast, Consensus Range, Assumption Notes | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | ForecastingExpertsDecisionStrategy | DecisionRolesGovernanceAlignment |
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