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| Criterion |  UX Research Usability Testing |  Architecture Architecture Decision Record |  Product Discovery Smoke Test |  Growth A/B Testing |
|---|---|---|---|---|
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. | 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. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. |
Complexitydifferent | Medium | Low | Low | High |
Timedifferent | 1-2 h je Session | 15-45 min | 1-5 Tage | 1-4 Wochen |
Participantsdifferent | Based on research question | 1-3 | Nutzertraffic | 1-6 |
Formatdifferent | Workshop + async | Async | Async | Async |
Outputdifferent | Usability Issues, Severity List, Recommendations | ADR File, Decision Log, Rationale | Interest Metrics, Conversion Signal, Learning Note | Experiment results, Decision log, Learning summary |
Tagsno overlap | ValidationUXPrototype | ArchitectureRationaleDocumentationGovernance | ValidationExperimentsDemandGrowth | ExperimentsGrowthAnalyticsValidation |