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| Criterion |  UX Research User Interviews |  Architecture LASR (Lightweight Approach for Software Reviews) |  Product Discovery Fake Door Test |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | 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 demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 30–60 min per interview | 3–4 h for initial assessment; preparation and deeper analysis additional | 1-5 Tage | 25-40 min |
Participantsdifferent | 1 participant per interview | 1 or a small team; particularly suitable for 3–4 people | Nutzertraffic | 1-5 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | 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 | Click Data, Interest Signal, Learning Decision | Learning Card with evidence and next action |
Tagsno overlap | QualitativeResearchCustomerDiscovery | ArchitectureQualityRiskAssessmentLean | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryLearning |