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| Criterion |  Architecture arc42 |  UX Research User Interviews |  Architecture Architecture Communication Canvas |  Architecture Architecture Decision Record |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | 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. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 1-2 Tage | 30–60 min per interview | 60-120 min | 15-45 min |
Participantsdifferent | 1-4 | 1 participant per interview | 2-8 | 1-3 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Architecture Document, Context View, Runtime View, Deployment View | Interview Notes, Themes, Insight Summary | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | ADR File, Decision Log, Rationale |
Tagsno overlap | ArchitectureDocumentationCommunication | QualitativeResearchCustomerDiscovery | ArchitectureCommunicationStakeholdersCanvas | ArchitectureRationaleDocumentationGovernance |