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| Criterion |  Architecture C4 Model |  Product Discovery Test Card |  Architecture Architecture Communication Canvas |  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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | 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 | 20-35 min | 60-120 min | 30-60 min |
Participantsdifferent | 1-5 | 1-5 | 2-8 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Test Card with a pre-set threshold | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | Completed Experiment Canvas, Success Metric |
Tagsno overlap | ArchitectureCommunicationVisualization | ExperimentsValidationDiscoveryHypothesis | ArchitectureCommunicationStakeholdersCanvas | ExperimentsValidationDiscoveryHypothesis |