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| Criterion |  Architecture Architecture Decision Record |  UX Research User Interviews |  Domain Modeling EventStorming |  Architecture arc42 |
|---|---|---|---|---|
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 domain consists of many events, rules, and states, it creates a shared modeling space for the team. It bundles language, flows, and boundaries before domain knowledge fragments into siloed views. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 15-45 min | 30–60 min per interview | 2-8 h | 1-2 Tage |
Participantsdifferent | 1-3 | 1 participant per interview | 5-12 | 1-4 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Interview Notes, Themes, Insight Summary | Event Timeline, Ubiquitous Language, Boundaries, Open Questions | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | QualitativeResearchCustomerDiscovery | Domain-Driven DesignEventsDiscoveryWorkshop | ArchitectureDocumentationCommunication |