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| Criterion |  UX Research Personas |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making Assumption Surfacing |  UX Research User Interviews |
|---|---|---|---|---|
Purposedifferent | When target groups stay too vague and teams talk about the same people differently, personas create a shared, solid picture of usage. Condensed profiles make needs, contexts, and differences tangible enough for decisions. | 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. | 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 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. |
Complexitydifferent | Medium | High | Low | Low |
Timedifferent | 1-3 Tage | Several meetings plus preparation and analysis; total effort depends on scope | 45-90 min | 30–60 min per interview |
Participantsdifferent | Internes Team | Evaluation team, architects, and relevant stakeholders | 2-8 | 1 participant per interview |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Persona Profiles, Needs Summary, Scenario Notes | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Assumption List, Critical Assumptions, Learning Plan | Interview Notes, Themes, Insight Summary |
Tagsno overlap | ResearchCustomerSynthesis | ArchitectureQualityRiskTradeoffsStakeholders | AssumptionsRiskDecisionDiscovery | QualitativeResearchCustomerDiscovery |