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| Criterion |  Engineering Fault Isolation |  Architecture Architecture Communication Canvas |  Operations Fishbone Diagram |
|---|---|---|---|
Purposedifferent | 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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | 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. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 30-180 min | 60-120 min | 30-60 min |
Participantsdifferent | 1-6 | 2-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | TroubleshootingDiagnosisEngineering | ArchitectureCommunicationStakeholdersCanvas | Root causeQualityOperations |
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