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Selected:Expectation MappingATAM (Architecture Tradeoff Analysis Method)3-Circle Venn DiagramSAAM (Software Architecture Analysis Method)
| Criterion |  Facilitation Expectation Mapping |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Facilitation 3-Circle Venn Diagram |  Architecture SAAM (Software Architecture Analysis Method) |
|---|---|---|---|---|
Purposedifferent | When roles, interfaces, or projects fail because of differing expectations, Expectation Mapping surfaces these differences. It shows what each side takes for granted and where the pictures diverge. | 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. | 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. | 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 | Low | High | Low | High |
Timedifferent | 45-90 min | Several meetings plus preparation and analysis; total effort depends on scope | 15-45 min | Preparation, scenario analysis, and findings review; effort depends on scope |
Participantsdifferent | 3-12 | Evaluation team, architects, and relevant stakeholders | 2-8 | Architecture experts and stakeholders for scenarios and weighting |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Expectation Map, Alignment Notes, Agreements | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Venn Diagram, Overlap Notes, Differentiators | 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 | AlignmentStakeholdersTeam | ArchitectureQualityRiskTradeoffsStakeholders | ComparisonFacilitationAlignment | ArchitectureChangeAnalysisComparisonQuality |