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| Criterion |  Architecture Architecture Decision Record |  Decision Making Wideband Delphi |  Decision Making DACI |  Decision Making Delphi Method |
|---|---|---|---|---|
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. | A single opinion rarely holds up for planning when the future is genuinely uncertain. It separates options, evaluation criteria, and open risks. The result is captured as an Estimate Range, Assumption Log, and Expert Consensus Notes. | 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 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. |
Complexitydifferent | Low | High | Low | High |
Timedifferent | 15-45 min | 1-4 h or multiple rounds | 30-60 min | 1-4 Wochen |
Participantsdifferent | 1-3 | 4-12 Experten | 2-10 | 6-30 Experten |
Formatdifferent | Async | Workshop + async | Workshop + async | Async |
Outputdifferent | ADR File, Decision Log, Rationale | Estimate Range, Assumption Log, Expert Consensus Notes | DACI Matrix, Decision Owner, Decision Log | Expert Forecast, Consensus Range, Assumption Notes |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | EstimationExpertsForecasting | DecisionRolesGovernanceAlignment | ForecastingExpertsDecisionStrategy |