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| Criterion |  UX Research User Interviews |  UX Design Lean UX Canvas |  Architecture C4 Model |  UX Design Customer Journey Canvas |
|---|---|---|---|---|
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 Lean UX Canvas helps clarify user behavior, touchpoints, and concept decisions. It makes assumptions and desired outcomes visible and captures the result as a completed canvas, hypothesis list, and first experiment. | 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 journey needs to be understood across several phases, it arranges experience, touchpoints, and opportunities into one picture. It makes gaps and friction along the user path clear. |
Complexitydifferent | Low | Medium | Low | Medium |
Timedifferent | 30–60 min per interview | 2-3 h | 1-4 h | 1-3 h |
Participantsdifferent | 1 participant per interview | 3-8 | 1-5 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Interview Notes, Themes, Insight Summary | Completed Lean UX Canvas, Hypothesis list, First experiment | Context Diagram, Container Diagram, Component Diagram | Customer Journey Canvas, Pain Points, Experience Opportunities |
Tagsno overlap | QualitativeResearchCustomerDiscovery | CanvasHypothesisOutcomesDiscovery | ArchitectureCommunicationVisualization | JourneyCustomerService designCanvas |