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| Criterion |  Architecture C4 Model |  UX Research User Interviews |  Product Discovery MVP Test Matrix |  Product Discovery Experiment Canvas |
|---|---|---|---|---|
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 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 several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. | When experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 1-4 h | 30–60 min per interview | 45-75 min | 30-60 min |
Participantsdifferent | 1-5 | 1 participant per interview | 2-8 | 1-5 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Interview Notes, Themes, Insight Summary | Test Matrix, Test Plan | Completed Experiment Canvas, Success Metric |
Tagsno overlap | ArchitectureCommunicationVisualization | QualitativeResearchCustomerDiscovery | ExperimentsValidationDiscoveryOptions | ExperimentsValidationDiscoveryHypothesis |