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| Criterion |  UX Research User Interviews |  Architecture Architecture Decision Record |  Operations A3 Problem Solving |
|---|---|---|---|
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. | 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. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | Low | Low | Medium |
Timedifferent | 30–60 min per interview | 15-45 min | 45-90 min |
Participantsdifferent | 1 participant per interview | 1-3 | 2-5 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | ADR File, Decision Log, Rationale | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | QualitativeResearchCustomerDiscovery | ArchitectureRationaleDocumentationGovernance | LeanProblem solvingCoachingOperations |
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