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| Criterion |  Architecture Software Architecture Canvas |  Architecture Architecture Decision Record |  Operations Root Cause Tree 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. | 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. | 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. | 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 | Low | Medium | Low |
Timedifferent | 1-2 h | 15-45 min | 1-3 h | 15-30 min |
Participantsdifferent | 3-10 | 1-3 | 2-8 | 2-6 |
Formatdifferent | Workshop | Async | Workshop | Workshop |
Outputdifferent | Architecture Canvas, Goals, Constraints, Quality Attributes | ADR File, Decision Log, Rationale | Cause Tree, Evidence Notes, Countermeasures | Root cause notes, Countermeasures |
Tagsno overlap | CanvasArchitectureAlignmentWorkshop | ArchitectureRationaleDocumentationGovernance | Root causeTreeIncidentQuality | Root causeIncidentLeanProblem solving |