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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Engineering Fault Isolation |
|---|---|---|
Purposedifferent | 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. | 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. |
Complexitydifferent | High | Medium |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 30-180 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 1-6 |
Formatsame | Workshop + async | Workshop + async |
Outputdifferent | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | TroubleshootingDiagnosisEngineering |
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