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| Criterion |  Engineering Fault Isolation |  Architecture Software Architecture Canvas |  Architecture Architecture Decision Record |  Architecture arc42 |
|---|---|---|---|---|
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. | 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. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 30-180 min | 1-2 h | 15-45 min | 1-2 Tage |
Participantsdifferent | 1-6 | 3-10 | 1-3 | 1-4 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Architecture Canvas, Goals, Constraints, Quality Attributes | ADR File, Decision Log, Rationale | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | TroubleshootingDiagnosisEngineering | CanvasArchitectureAlignmentWorkshop | ArchitectureRationaleDocumentationGovernance | ArchitectureDocumentationCommunication |