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| Criterion |  UX Research User Interviews |  Agile Specification by Example |  Product Discovery Dual-Track Agile |  UX Research Personas |
|---|---|---|---|---|
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. | When business rules need to become precise, it ties language, example, and test together. It sorts work by value, risk, and delivery ability. The result is captured as an Example Table and Acceptance Tests. | When uncertainty and delivery run in parallel, it separates learning work from implementation while keeping both connected. It prevents unvalidated ideas from falling directly into the delivery stream. | 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. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 30–60 min per interview | 60-90 min pro Feature | Laufend, Wochen bis Monate | 1-3 Tage |
Participantsdifferent | 1 participant per interview | 3-6 | 4-10 | Internes Team |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Example Table, Acceptance Tests | Discovery Backlog, Delivery Backlog, Experiment-Ergebnisse, Validierte Stories | Persona Profiles, Needs Summary, Scenario Notes |
Tagsno overlap | QualitativeResearchCustomerDiscovery | AgileRequirementsExamplesBehavior-Driven Development | AgileDiscoveryDelivery | ResearchCustomerSynthesis |