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| Criterion |  UX Research User Interviews |  UX Research Affinity Diagramming |  Architecture Architecture Decision Record |  UX Research Personas |
|---|---|---|---|---|
Purposedifferent | 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 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. | 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 target groups stay too vague and teams talk about the same people differently, personas create a shared, solid picture of usage. Condensed profiles make needs, contexts, and differences tangible enough for decisions. |
Complexitydifferent | Low | Low | Low | Medium |
Timedifferent | 30–60 min per interview | 45–90 min | 15-45 min | 1-3 Tage |
Participantsdifferent | 1 participant per interview | 3-10 | 1-3 | Internes Team |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Theme clusters, Insight statements, Opportunity areas | ADR File, Decision Log, Rationale | Persona Profiles, Needs Summary, Scenario Notes |
Tagsno overlap | QualitativeResearchCustomerDiscovery | SynthesisQualitativeRoot cause | ArchitectureRationaleDocumentationGovernance | ResearchCustomerSynthesis |