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| Criterion |  UX Research User Interviews |  Architecture C4 Model |  Product Discovery Opportunity Interview |  Architecture arc42 |
|---|---|---|---|---|
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. | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | When opportunities are still hidden behind signals of need, it structures conversations around needs and obstacles. It looks for patterns that lead to new product opportunities. | 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 | 30–60 min per interview | 1-4 h | 30-60 min je Interview | 1-2 Tage |
Participantsdifferent | 1 participant per interview | 1-5 | 5-12 Interviews | 1-4 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Context Diagram, Container Diagram, Component Diagram | Interview Notes, Opportunity Themes, Customer Quotes | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | QualitativeResearchCustomerDiscovery | ArchitectureCommunicationVisualization | DiscoveryInterviewsOpportunityCustomer | ArchitectureDocumentationCommunication |