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Selected:IBISSAAM (Software Architecture Analysis Method)ATAM (Architecture Tradeoff Analysis Method)Architecture Decision Record
| Criterion |  Knowledge Modeling IBIS |  Architecture SAAM (Software Architecture Analysis Method) |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Architecture Architecture Decision Record |
|---|---|---|---|---|
Purposedifferent | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. | 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. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. | 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 | Medium | High | High | Low |
Timedifferent | 1-3 h | Preparation, scenario analysis, and findings review; effort depends on scope | Several meetings plus preparation and analysis; total effort depends on scope | 15-45 min |
Participantsdifferent | 2-8 | Architecture experts and stakeholders for scenarios and weighting | Evaluation team, architects, and relevant stakeholders | 1-3 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Issue Map, Positions, Argument Notes | 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 | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | ADR File, Decision Log, Rationale |
Tagsno overlap | RationaleKnowledgeDecision | ArchitectureChangeAnalysisComparisonQuality | ArchitectureQualityRiskTradeoffsStakeholders | ArchitectureRationaleDocumentationGovernance |