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| Criterion | ![]() UX Research User Interviews | ![]() UX Design Lean UX Canvas | ![]() Architecture arc42 | ![]() Architecture Architecture Decision Record |
|---|---|---|---|---|
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. | The Lean UX Canvas helps clarify user behavior, touchpoints, and concept decisions. It makes assumptions and desired outcomes visible and captures the result as a completed canvas, hypothesis list, and first experiment. | 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. | 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 | Low | Medium | Low | Low |
Timedifferent | 30–60 min per interview | 2-3 h | 1-2 Tage | 15-45 min |
Participantsdifferent | 1 participant per interview | 3-8 | 1-4 | 1-3 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Completed Lean UX Canvas, Hypothesis list, First experiment | Architecture Document, Context View, Runtime View, Deployment View | ADR File, Decision Log, Rationale |
Tagsno overlap | QualitativeResearchCustomerDiscovery | CanvasHypothesisOutcomesDiscovery | ArchitectureDocumentationCommunication | ArchitectureRationaleDocumentationGovernance |



