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| Criterion |  Architecture Software Architecture Canvas |  Operations MORT Analysis |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | 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. | For a safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Low | High | Low |
Timedifferent | 1-2 h | Mehrere Tage bis Wochen | 15-30 min |
Participantsdifferent | 3-10 | 2-6 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Architecture Canvas, Goals, Constraints, Quality Attributes | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Root cause notes, Countermeasures |
Tagsno overlap | CanvasArchitectureAlignmentWorkshop | Root causeSafetySystemicIncident | Root causeIncidentLeanProblem solving |
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