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| Criterion |  Operations Root Cause Tree Analysis |  Architecture Software Architecture Canvas |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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 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 | Medium | Low | Low |
Timedifferent | 1-3 h | 1-2 h | 15-30 min |
Participantsdifferent | 2-8 | 3-10 | 2-6 |
Formatsame | Workshop | Workshop | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Architecture Canvas, Goals, Constraints, Quality Attributes | Root cause notes, Countermeasures |
Tagsno overlap | Root causeTreeIncidentQuality | CanvasArchitectureAlignmentWorkshop | Root causeIncidentLeanProblem solving |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
