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| Criterion |  UX Research Diary Study |  Decision Making DACI |  Architecture Architecture Decision Record |
|---|---|---|---|
Purposedifferent | When experiences build up over days or weeks and a single session cannot capture them, Diary Study records the course of everyday life. Recurring triggers, moods, and habits become visible this way, beyond the sharpness of memory. | 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. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 1-4 Wochen | 30-60 min | 15-45 min |
Participantsdifferent | 5-20 | 2-10 | 1-3 |
Formatdifferent | Async | Workshop + async | Async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | DACI Matrix, Decision Owner, Decision Log | ADR File, Decision Log, Rationale |
Tagsno overlap | UX researchTrackingBehavior | DecisionRolesGovernanceAlignment | ArchitectureRationaleDocumentationGovernance |
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