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| Criterion |  Engineering Fault Isolation |  Architecture Software Architecture Canvas |  Product Discovery Assumption Mapping |
|---|---|---|---|
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 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. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 30-180 min | 1-2 h | 45-60 min |
Participantsdifferent | 1-6 | 3-10 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Architecture Canvas, Goals, Constraints, Quality Attributes | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | TroubleshootingDiagnosisEngineering | CanvasArchitectureAlignmentWorkshop | AssumptionsRiskExperimentsValidation |
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