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Selected:Solution InterviewLASR (Lightweight Approach for Software Reviews)Learning CardFake Door Test
| Criterion |  Product Discovery Solution Interview |  Architecture LASR (Lightweight Approach for Software Reviews) |  Product Discovery Learning Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 30-60 min je Interview | 3–4 h for initial assessment; preparation and deeper analysis additional | 25-40 min | 1-5 Tage |
Participantsdifferent | 5-10 Interviews | 1 or a small team; particularly suitable for 3–4 people | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | 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 | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ValidationInterviewsPrototype | ArchitectureQualityRiskAssessmentLean | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |