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Selected:Fault IsolationExpectation MappingATAM (Architecture Tradeoff Analysis Method)Spotify Model Mapping
| Criterion |  Engineering Fault Isolation |  Facilitation Expectation Mapping |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Team Design Spotify Model 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. | 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 a team landscape has grown without clear grouping, it maps roles and relationships onto the Spotify model. It clarifies responsibility, interaction, and load between teams. The result is captured as a Spotify model map and action list. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 30-180 min | 45-90 min | Several meetings plus preparation and analysis; total effort depends on scope | 90-180 min |
Participantsdifferent | 1-6 | 3-12 | Evaluation team, architects, and relevant stakeholders | 5-15 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | 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 | Spotify Model Map, Action List |
Tagsno overlap | TroubleshootingDiagnosisEngineering | AlignmentStakeholdersTeam | ArchitectureQualityRiskTradeoffsStakeholders | TeamOrganizationAlignmentDiagnosis |