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| Criterion |  UX Research Diary Study |  Architecture Architecture Decision Record |  Product Discovery Smoke Test |
|---|---|---|---|
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. | 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 demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 1-4 Wochen | 15-45 min | 1-5 Tage |
Participantsdifferent | 5-20 | 1-3 | Nutzertraffic |
Formatsame | Async | Async | Async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | ADR File, Decision Log, Rationale | Interest Metrics, Conversion Signal, Learning Note |
Tagsno overlap | UX researchTrackingBehavior | ArchitectureRationaleDocumentationGovernance | ValidationExperimentsDemandGrowth |
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