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| Criterion |  Operations Root Cause Tree Analysis |  Operations Failure Mode and Effects Analysis |  Architecture Risk Storming |
|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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. | 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. |
Complexitydifferent | Medium | High | Low |
Timedifferent | 1-3 h | 2-6 h | 60-90 min |
Participantsdifferent | 2-8 | 3-10 | 4-12 |
Formatsame | Workshop | Workshop | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | FMEA Table, Risk Priority, Mitigation Actions | Annotated Diagram, Prioritized Risk List, Action Backlog |
Tagsno overlap | Root causeTreeIncidentQuality | RiskQualityOperationsRoot cause | RiskArchitectureWorkshopValidation |
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