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| Criterion |  Architecture Quality Attribute Workshop |  Operations Fishbone Diagram |  Operations Fault Tree Analysis |
|---|---|---|---|
Purposedifferent | A Quality Attribute Workshop translates quality requirements into concrete scenarios and architecture impulses. The method brings product, engineering, and operations to the same view of desired properties. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. |
Complexitydifferent | Medium | Low | High |
Timedifferent | 2-4 h | 30-60 min | 2-6 h |
Participantsdifferent | 5-15 | 2-8 | 3-8 |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Quality Scenarios, Priority List, Architecture Concerns | Fishbone Diagram, Cause Categories, Investigation Backlog | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | RequirementsArchitectureWorkshop | Root causeQualityOperations | RiskRoot causeSafety |
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