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| Criterion |  Architecture C4 Model |  UX Research Empathy Mapping |  UX Research Personas |  UX Research User Interviews |
|---|---|---|---|---|
Purposedifferent | 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 a lot is assumed about a target group but little is seen jointly, empathy mapping makes knowledge and gaps directly comparable. The picture also shows which assumptions hold up and where evidence is missing. | When target groups stay too vague and teams talk about the same people differently, personas create a shared, solid picture of usage. Condensed profiles make needs, contexts, and differences tangible enough for decisions. | 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. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 1-4 h | 30–60 min | 1-3 Tage | 30–60 min per interview |
Participantsdifferent | 1-5 | 4-8 | Internes Team | 1 participant per interview |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Empathy Map, Assumptions List, Research Gaps | Persona Profiles, Needs Summary, Scenario Notes | Interview Notes, Themes, Insight Summary |
Tagsno overlap | ArchitectureCommunicationVisualization | SynthesisQualitativeWorkshop | ResearchCustomerSynthesis | QualitativeResearchCustomerDiscovery |