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| Criterion |  Architecture Quality Attribute Workshop |  Operations Failure Mode and Effects Analysis |  Operations 5 Whys |
|---|---|---|---|
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. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | High | Low |
Timedifferent | 2-4 h | 2-6 h | 15-30 min |
Participantsdifferent | 5-15 | 3-10 | 2-6 |
Formatsame | Workshop | Workshop | Workshop |
Outputdifferent | Quality Scenarios, Priority List, Architecture Concerns | FMEA Table, Risk Priority, Mitigation Actions | Root cause notes, Countermeasures |
Tagsno overlap | RequirementsArchitectureWorkshop | RiskQualityOperationsRoot cause | Root causeIncidentLeanProblem solving |
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