View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Architecture Architecture Decision Record |  Architecture C4 Model |  Product Discovery Test Card |
|---|---|---|---|
Purposedifferent | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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. |
Complexitysame | Low | Low | Low |
Timedifferent | 15-45 min | 1-4 h | 20-35 min |
Participantsdifferent | 1-3 | 1-5 | 1-5 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Context Diagram, Container Diagram, Component Diagram | Test Card with a pre-set threshold |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | ArchitectureCommunicationVisualization | ExperimentsValidationDiscoveryHypothesis |
Often compared together
Methods with strong topical overlap with the current selection, not yet in the comparison.
