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| Criterion |  Product Discovery Opportunity Solution Tree |  UX Research User Interviews |  Architecture Architecture Decision Record |
|---|---|---|---|
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. | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | 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 | Medium | Low | Low |
Timedifferent | 1-2 h Setup, laufend | 30–60 min per interview | 15-45 min |
Participantsdifferent | 2-6 | 1 participant per interview | 1-3 |
Formatdifferent | Workshop + async | Workshop + async | Async |
Outputdifferent | Opportunity Solution Tree, Experiment Backlog, Learning Log | Interview Notes, Themes, Insight Summary | ADR File, Decision Log, Rationale |
Tagsno overlap | DiscoveryOutcomesExperimentsOpportunity | QualitativeResearchCustomerDiscovery | ArchitectureRationaleDocumentationGovernance |
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