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| Criterion |  UX Research Affinity Diagramming |  Architecture Architecture Decision Record |  Decision Making Argument Mapping |  Decision Making DACI |
|---|---|---|---|---|
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. | 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. | When statements, evidence, and counterarguments get mixed up, a debate quickly loses its structure. Argument Mapping breaks a thesis down into its reasoning and makes visible what it really rests on. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 45–90 min | 15-45 min | 1-3 h | 30-60 min |
Participantsdifferent | 3-10 | 1-3 | 1-8 | 2-10 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop + async |
Outputdifferent | Theme clusters, Insight statements, Opportunity areas | ADR File, Decision Log, Rationale | Argument Map, Evidence Gaps, Decision Rationale | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | SynthesisQualitativeRoot cause | ArchitectureRationaleDocumentationGovernance | SensemakingDecisionRationale | DecisionRolesGovernanceAlignment |