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| Criterion |  Architecture Architecture Decision Record |  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 Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitysame | Low | Low |
Timedifferent | 15-45 min | 20-35 min |
Participantsdifferent | 1-3 | 1-5 |
Formatdifferent | Async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Test Card with a pre-set threshold |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | ExperimentsValidationDiscoveryHypothesis |
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