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| Criterion |  Decision Making Constraint Analysis |  Architecture SAAM (Software Architecture Analysis Method) |  Decision Making DACI |  Facilitation 3-Circle Venn Diagram |
|---|---|---|---|---|
Purposedifferent | When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped. | 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 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 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 | Low | Low |
Timedifferent | 30-90 min | Preparation, scenario analysis, and findings review; effort depends on scope | 30-60 min | 15-45 min |
Participantsdifferent | 2-8 | Architecture experts and stakeholders for scenarios and weighting | 2-10 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | 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 | DACI Matrix, Decision Owner, Decision Log | Venn Diagram, Overlap Notes, Differentiators |
Tagsno overlap | ConstraintsDecisionPlanningOptions | ArchitectureChangeAnalysisComparisonQuality | DecisionRolesGovernanceAlignment | ComparisonFacilitationAlignment |