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| Criterion |  Architecture Architecture Decision Record |  UX Research User Interviews |  Facilitation Consensus Workshop |  Facilitation 3-Circle Venn Diagram |
|---|---|---|---|---|
Purposedifferent | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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 a group needs a solid decision without outvoting individual factions, a Consensus Workshop creates a negotiable common ground. It makes agreement, reservations, and open tensions discussable at the same time. | When three perspectives matter at the same time, a Three-Circle Venn Diagram shows the overlaps and remainders precisely. It makes visible where shared effect arises and where only a partial perspective applies. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 15-45 min | 30–60 min per interview | 1-3 h | 15-45 min |
Participantsdifferent | 1-3 | 1 participant per interview | 5-30 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Interview Notes, Themes, Insight Summary | Consensus Clusters, Theme Titles, Priority Areas | Venn Diagram, Overlap Notes, Differentiators |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | QualitativeResearchCustomerDiscovery | FacilitationConsensusWorkshopAlignment | ComparisonFacilitationAlignment |