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| Criterion |  Operations 5 Whys |  Architecture Risk Storming |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|
Purposedifferent | 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. | Helps clarify architecture context, options, and consequences in concrete terms. It organizes technical context, alternatives, and consequences. The result is captured as an Annotated Diagram, a Prioritized Risk List, and an Action Backlog. | 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. |
Complexitydifferent | Low | Low | High |
Timedifferent | 15-30 min | 60-90 min | 2-6 h |
Participantsdifferent | 2-6 | 4-12 | 3-10 |
Formatsame | Workshop | Workshop | Workshop |
Outputdifferent | Root cause notes, Countermeasures | Annotated Diagram, Prioritized Risk List, Action Backlog | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | Root causeIncidentLeanProblem solving | RiskArchitectureWorkshopValidation | RiskQualityOperationsRoot cause |
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