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Selected:SAAM (Software Architecture Analysis Method)ATAM (Architecture Tradeoff Analysis Method)Assumption SurfacingChange Analysis
| Criterion |  Architecture SAAM (Software Architecture Analysis Method) |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making Assumption Surfacing |  Operations Change Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | 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. |
Complexitydifferent | High | High | Low | Medium |
Timedifferent | Preparation, scenario analysis, and findings review; effort depends on scope | Several meetings plus preparation and analysis; total effort depends on scope | 45-90 min | 45-120 min |
Participantsdifferent | Architecture experts and stakeholders for scenarios and weighting | Evaluation team, architects, and relevant stakeholders | 2-8 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | 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 | Assumption List, Critical Assumptions, Learning Plan | Change Matrix, Cause Hypotheses, Validation Questions, Action List |
Tagsno overlap | ArchitectureChangeAnalysisComparisonQuality | ArchitectureQualityRiskTradeoffsStakeholders | AssumptionsRiskDecisionDiscovery | ChangeRoot causeTroubleshootingComparison |