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Selected:ATAM (Architecture Tradeoff Analysis Method)User InterviewsAssumption SurfacingAssumption Mapping
| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  UX Research User Interviews |  Decision Making Assumption Surfacing |  Product Discovery Assumption Mapping |
|---|---|---|---|---|
Purposedifferent | 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 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. | 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. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | High | Low | Low | Medium |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 30–60 min per interview | 45-90 min | 45-60 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 1 participant per interview | 2-8 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Interview Notes, Themes, Insight Summary | Assumption List, Critical Assumptions, Learning Plan | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | QualitativeResearchCustomerDiscovery | AssumptionsRiskDecisionDiscovery | AssumptionsRiskExperimentsValidation |