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| Criterion |  Decision Making DACI |  Architecture SAAM (Software Architecture Analysis Method) |  Decision Making RAPID |  Facilitation 3-Circle Venn Diagram |
|---|---|---|---|---|
Purposedifferent | 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. | SAAM helps teams judge an architecture’s suitability for selected tasks and changes. It is particularly useful for examining modifiability and comparing architecture alternatives with clear reasoning. | In complex management decisions, clarity is often missing about who recommends, who agrees, and who makes the decision. RAPID creates this assignment and stabilizes decisions across several levels. | When three perspectives matter at the same time, a Three-Circle Venn Diagram shows the overlaps and remainders precisely. It makes visible where shared effect arises and where only a partial perspective applies. |
Complexitydifferent | Low | High | Medium | Low |
Timedifferent | 30-60 min | Preparation, scenario analysis, and findings review; effort depends on scope | 45-90 min | 15-45 min |
Participantsdifferent | 2-10 | Architecture experts and stakeholders for scenarios and weighting | 3-12 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | DACI Matrix, Decision Owner, Decision Log | Domain functions mapped to components and connections, Quality attributes and evaluation criteria, Typical tasks and their effects on the architecture, Reasoned evaluation or comparison of alternatives | RAPID Role Map, Recommendation, Decision Log | Venn Diagram, Overlap Notes, Differentiators |
Tagsno overlap | DecisionRolesGovernanceAlignment | ArchitectureChangeAnalysisComparisonQuality | DecisionRolesGovernance | ComparisonFacilitationAlignment |