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| Criterion |  Architecture Architecture Decision Record |  Product Discovery Opportunity Solution Tree |  UX Research Affinity Diagramming |  UX Research Empathy Mapping |
|---|---|---|---|---|
Purposedifferent | 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 discovery keeps swinging between goals, ideas, and learning loops, it creates clear steering logic. It connects the desired outcome, opportunities, and experiments into a legible structure. | 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. | When a lot is assumed about a target group but little is seen jointly, empathy mapping makes knowledge and gaps directly comparable. The picture also shows which assumptions hold up and where evidence is missing. |
Complexitydifferent | Low | Medium | Low | Low |
Timedifferent | 15-45 min | 1-2 h Setup, laufend | 45–90 min | 30–60 min |
Participantsdifferent | 1-3 | 2-6 | 3-10 | 4-8 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop |
Outputdifferent | ADR File, Decision Log, Rationale | Opportunity Solution Tree, Experiment Backlog, Learning Log | Theme clusters, Insight statements, Opportunity areas | Empathy Map, Assumptions List, Research Gaps |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | DiscoveryOutcomesExperimentsOpportunity | SynthesisQualitativeRoot cause | SynthesisQualitativeWorkshop |