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| Criterion |  Operations 5 Whys |  Architecture Software Architecture Canvas |  Facilitation 3-Circle Venn Diagram |
|---|---|---|---|
Purposedifferent | 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. | 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 three perspectives matter at the same time, a Three-Circle Venn Diagram shows the overlaps and remainders precisely. It makes visible where shared effect arises and where only a partial perspective applies. |
Complexitysame | Low | Low | Low |
Timedifferent | 15-30 min | 1-2 h | 15-45 min |
Participantsdifferent | 2-6 | 3-10 | 2-8 |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Root cause notes, Countermeasures | Architecture Canvas, Goals, Constraints, Quality Attributes | Venn Diagram, Overlap Notes, Differentiators |
Tagsno overlap | Root causeIncidentLeanProblem solving | CanvasArchitectureAlignmentWorkshop | ComparisonFacilitationAlignment |
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