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| Criterion |  Decision Making Delphi Method |  Knowledge Modeling IBIS |  Decision Making DACI |  Architecture Architecture Decision Record |
|---|---|---|---|---|
Purposedifferent | 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. | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. | 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 | Medium | Low | Low |
Timedifferent | 1-4 Wochen | 1-3 h | 30-60 min | 15-45 min |
Participantsdifferent | 6-30 Experten | 2-8 | 2-10 | 1-3 |
Formatdifferent | Async | Workshop + async | Workshop + async | Async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Issue Map, Positions, Argument Notes | DACI Matrix, Decision Owner, Decision Log | ADR File, Decision Log, Rationale |
Tagsno overlap | ForecastingExpertsDecisionStrategy | RationaleKnowledgeDecision | DecisionRolesGovernanceAlignment | ArchitectureRationaleDocumentationGovernance |