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| Criterion |  Operations Change Analysis |  Architecture SAAM (Software Architecture Analysis Method) |  Decision Making DACI |  Facilitation 3-Circle Venn Diagram |
|---|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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 | Medium | High | Low | Low |
Timedifferent | 45-120 min | Preparation, scenario analysis, and findings review; effort depends on scope | 30-60 min | 15-45 min |
Participantsdifferent | 2-6 | Architecture experts and stakeholders for scenarios and weighting | 2-10 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | 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 | ChangeRoot causeTroubleshootingComparison | ArchitectureChangeAnalysisComparisonQuality | DecisionRolesGovernanceAlignment | ComparisonFacilitationAlignment |