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| Criterion |  Architecture C4 Model |  Product Discovery MVP Test Matrix |  Product Discovery Test Card |
|---|---|---|---|
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 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 1-4 h | 45-75 min | 20-35 min |
Participantsdifferent | 1-5 | 2-8 | 1-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Test Matrix, Test Plan | Test Card with a pre-set threshold |
Tagsno overlap | ArchitectureCommunicationVisualization | ExperimentsValidationDiscoveryOptions | ExperimentsValidationDiscoveryHypothesis |
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