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Selected:Future Reality TreeATAM (Architecture Tradeoff Analysis Method)CATWOE AnalysisSAAM (Software Architecture Analysis Method)
| Criterion |  Systems Thinking Future Reality Tree |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Systems Thinking CATWOE Analysis |  Architecture SAAM (Software Architecture Analysis Method) |
|---|---|---|---|---|
Purposedifferent | A Future Reality Tree shows how desired actions are meant to lead to a better system state. The method checks whether a path of change holds together logically before time flows into implementation. | 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. | CATWOE structures a problem from six viewpoints and prevents too narrow a view of the situation. Different experiences of the system become comparably discussable this way. | 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. |
Complexitydifferent | High | High | Medium | High |
Timedifferent | 2-4 h | Several meetings plus preparation and analysis; total effort depends on scope | 45-90 min | Preparation, scenario analysis, and findings review; effort depends on scope |
Participantsdifferent | 3-8 | Evaluation team, architects, and relevant stakeholders | 3-8 | Architecture experts and stakeholders for scenarios and weighting |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | CATWOE Canvas, Root Definition, Stakeholder Perspectives, Constraints | 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 |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | ArchitectureQualityRiskTradeoffsStakeholders | Systems thinkingFramingStakeholders | ArchitectureChangeAnalysisComparisonQuality |