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| Criterion |  UX Research Usability Testing |  Decision Making DACI |  Architecture Architecture Decision Record |  Decision Making Decision Rights Mapping |
|---|---|---|---|---|
Purposedifferent | When a product is built but people get stuck on tasks, usability testing shows the friction at concrete points. Observed use instead of self-report makes visible where orientation, understanding, or interaction breaks down. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. | 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. | In organizations with many stakeholders, it often blurs who actually decides and who is merely consulted. It separates options, evaluation criteria, and open risks. The result is captured as a Decision Rights matrix and an agreement. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 1-2 h je Session | 30-60 min | 15-45 min | 90-180 min |
Participantsdifferent | Based on research question | 2-10 | 1-3 | 4-12 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop |
Outputdifferent | Usability Issues, Severity List, Recommendations | DACI Matrix, Decision Owner, Decision Log | ADR File, Decision Log, Rationale | Decision Rights Matrix, Agreement |
Tagsno overlap | ValidationUXPrototype | DecisionRolesGovernanceAlignment | ArchitectureRationaleDocumentationGovernance | DecisionGovernanceAlignmentResponsibility |