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| Criterion |  Product Discovery Problem Interview |  Architecture Architecture Decision Record |  UX Research User Interviews |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | 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 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. | 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 | 30-60 min je Interview | 15-45 min | 30–60 min per interview | 1-2 Tage |
Participantsdifferent | 5-12 Interviews | 1-3 | 1 participant per interview | 1-4 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | ADR File, Decision Log, Rationale | Interview Notes, Themes, Insight Summary | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | DiscoveryInterviewsValidation | ArchitectureRationaleDocumentationGovernance | QualitativeResearchCustomerDiscovery | ArchitectureDocumentationCommunication |