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| Criterion |  Engineering Fault Isolation |  Architecture Architecture Decision Record |  Architecture Software Architecture Canvas |
|---|---|---|---|
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. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | The Software Architecture Canvas reduces a system to the most important architecture decisions, constraints, and interfaces. It is useful when teams need a resilient overall picture quickly. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 30-180 min | 15-45 min | 1-2 h |
Participantsdifferent | 1-6 | 1-3 | 3-10 |
Formatdifferent | Workshop + async | Async | Workshop |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | ADR File, Decision Log, Rationale | Architecture Canvas, Goals, Constraints, Quality Attributes |
Tagsno overlap | TroubleshootingDiagnosisEngineering | ArchitectureRationaleDocumentationGovernance | CanvasArchitectureAlignmentWorkshop |
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