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| Criterion |  UX Research Usability Testing |  Product Discovery Smoke Test |  Architecture LASR (Lightweight Approach for Software Reviews) |  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. | 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. | LASR helps development teams identify where their software falls short of important quality goals and which improvements to consider. A small group with existing system knowledge can make an initial assessment and investigate open questions in more detail. | 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 | Medium | High |
Timedifferent | 1-2 h je Session | 1-5 Tage | 3–4 h for initial assessment; preparation and deeper analysis additional | 1-4 Wochen |
Participantsdifferent | Based on research question | Nutzertraffic | 1 or a small team; particularly suitable for 3–4 people | 1-6 |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | Usability Issues, Severity List, Recommendations | Interest Metrics, Conversion Signal, Learning Note | Lean Mission Statement describing the software’s purpose, Prioritized quality goals and evaluation criteria, Risks and estimated gaps against quality goals, More closely examined findings and open checks | Experiment results, Decision log, Learning summary |
Tagsno overlap | ValidationUXPrototype | ValidationExperimentsDemandGrowth | ArchitectureQualityRiskAssessmentLean | ExperimentsGrowthAnalyticsValidation |