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Selected:Fault IsolationSAAM (Software Architecture Analysis Method)3-Circle Venn DiagramAlignment Mapping
| Criterion |  Engineering Fault Isolation |  Architecture SAAM (Software Architecture Analysis Method) |  Facilitation 3-Circle Venn Diagram |  Facilitation Alignment Mapping |
|---|---|---|---|---|
Purposedifferent | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | 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. | 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. | When several people work toward one goal but hold different mental maps, Alignment Mapping makes the discrepancies visible. It arranges goals, assumptions, and priorities so shared direction becomes verifiable. |
Complexitydifferent | Medium | High | Low | Medium |
Timedifferent | 30-180 min | Preparation, scenario analysis, and findings review; effort depends on scope | 15-45 min | 1-2 h |
Participantsdifferent | 1-6 | Architecture experts and stakeholders for scenarios and weighting | 2-8 | 4-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | 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 | Venn Diagram, Overlap Notes, Differentiators | Alignment Map, Open Issues, Decision Questions |
Tagsno overlap | TroubleshootingDiagnosisEngineering | ArchitectureChangeAnalysisComparisonQuality | ComparisonFacilitationAlignment | AlignmentStakeholdersStrategyFacilitation |