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Selected:Architecture Decision RecordSAAM (Software Architecture Analysis Method)Decision Rights Mapping3-Circle Venn Diagram
| Criterion |  Architecture Architecture Decision Record |  Architecture SAAM (Software Architecture Analysis Method) |  Decision Making Decision Rights Mapping |  Facilitation 3-Circle Venn Diagram |
|---|---|---|---|---|
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. | 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 organizations with many stakeholders, it often blurs who actually decides and who is merely consulted. It separates options, evaluation criteria, and open risks. The result is captured as a Decision Rights matrix and an agreement. | 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 | 15-45 min | Preparation, scenario analysis, and findings review; effort depends on scope | 90-180 min | 15-45 min |
Participantsdifferent | 1-3 | Architecture experts and stakeholders for scenarios and weighting | 4-12 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | 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 | Decision Rights Matrix, Agreement | Venn Diagram, Overlap Notes, Differentiators |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | ArchitectureChangeAnalysisComparisonQuality | DecisionGovernanceAlignmentResponsibility | ComparisonFacilitationAlignment |