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| Criterion |  Architecture Architecture Decision Record |  UX Research User Interviews |  Product Discovery Problem Interview |  Product Discovery Concierge MVP |
|---|---|---|---|---|
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 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. | 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. | When an idea can first fail or grow through genuine hands-on support, it relies on manual work instead of automation. It shows whether user value holds up even under manual execution. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 15-45 min | 30–60 min per interview | 30-60 min je Interview | 1-4 Wochen |
Participantsdifferent | 1-3 | 1 participant per interview | 5-12 Interviews | 3-10 Kunden |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Interview Notes, Themes, Insight Summary | Problem Evidence, Risk Notes, Customer Segments | Concierge Learnings, Service Blueprint, MVP Risks |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | QualitativeResearchCustomerDiscovery | DiscoveryInterviewsValidation | MVPValidationServiceDiscovery |