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Selected:Riskiest Assumption TestATAM (Architecture Tradeoff Analysis Method)Fake Door TestAssumption Surfacing
| Criterion |  Product Discovery Riskiest Assumption Test |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Product Discovery Fake Door Test |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
Purposedifferent | When an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. | 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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. |
Complexitydifferent | Medium | High | Medium | Low |
Timedifferent | 1-2 Wochen pro Iteration | Several meetings plus preparation and analysis; total effort depends on scope | 1-5 Tage | 45-90 min |
Participantsdifferent | 2-6 | Evaluation team, architects, and relevant stakeholders | Nutzertraffic | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Prioritized Assumption List, Test Plan, Results Report | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Click Data, Interest Signal, Learning Decision | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | ExperimentsValidationDiscoveryAssumptions | ArchitectureQualityRiskTradeoffsStakeholders | ValidationExperimentsDemandDiscovery | AssumptionsRiskDecisionDiscovery |