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| Criterion |  Product Discovery Opportunity Solution Tree |  Architecture Architecture Decision Record |  UX Research Empathy Mapping |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | 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. | 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 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. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 1-2 h Setup, laufend | 15-45 min | 30–60 min | 1-2 Tage |
Participantsdifferent | 2-6 | 1-3 | 4-8 | 1-4 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | Opportunity Solution Tree, Experiment Backlog, Learning Log | ADR File, Decision Log, Rationale | Empathy Map, Assumptions List, Research Gaps | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | DiscoveryOutcomesExperimentsOpportunity | ArchitectureRationaleDocumentationGovernance | SynthesisQualitativeWorkshop | ArchitectureDocumentationCommunication |