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| Criterion |  Architecture arc42 |  Architecture SAAM (Software Architecture Analysis Method) |  Decision Making DACI |  Architecture Architecture Decision Record |
|---|---|---|---|---|
Purposedifferent | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. | 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. | 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 | Low | High | Low | Low |
Timedifferent | 1-2 Tage | Preparation, scenario analysis, and findings review; effort depends on scope | 30-60 min | 15-45 min |
Participantsdifferent | 1-4 | Architecture experts and stakeholders for scenarios and weighting | 2-10 | 1-3 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Architecture Document, Context View, Runtime View, Deployment View | 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 | ADR File, Decision Log, Rationale |
Tagsno overlap | ArchitectureDocumentationCommunication | ArchitectureChangeAnalysisComparisonQuality | DecisionRolesGovernanceAlignment | ArchitectureRationaleDocumentationGovernance |