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| Criterion |  Decision Making DACI |  UX Research User Interviews |  Product Strategy DIBB |
|---|---|---|---|
Purposedifferent | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. | 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. | DIBB helps clarify target groups, value, goals, and priorities by making the logic behind a decision explicit. It captures results as a DIBB document, belief list, bet list, and learning report. |
Complexitysame | Low | Low | Low |
Timedifferent | 30-60 min | 30–60 min per interview | 1-2 h |
Participantsdifferent | 2-10 | 1 participant per interview | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | DACI Matrix, Decision Owner, Decision Log | Interview Notes, Themes, Insight Summary | DIBB document, Belief list, Bet list, Learning report |
Tagsno overlap | DecisionRolesGovernanceAlignment | QualitativeResearchCustomerDiscovery | StrategyDecisionAssumptionsHypothesis |
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