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| Criterion |  UX Research Affinity Diagramming |  Operations Root Cause Tree Analysis |  Architecture Architecture Decision Record |
|---|---|---|---|
Purposedifferent | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | 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. | 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. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 45–90 min | 1-3 h | 15-45 min |
Participantsdifferent | 3-10 | 2-8 | 1-3 |
Formatdifferent | Workshop | Workshop | Async |
Outputdifferent | Theme clusters, Insight statements, Opportunity areas | Cause Tree, Evidence Notes, Countermeasures | ADR File, Decision Log, Rationale |
Tagsno overlap | SynthesisQualitativeRoot cause | Root causeTreeIncidentQuality | ArchitectureRationaleDocumentationGovernance |
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