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Selected:Test CardArchitecture Decision RecordARID (Active Reviews for Intermediate Designs)Learning Card
| Criterion |  Product Discovery Test Card |  Architecture Architecture Decision Record |  Architecture ARID (Active Reviews for Intermediate Designs) |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 20-35 min | 15-45 min | 2–4 h review as a planning range; preparation and evaluation additional | 25-40 min |
Participantsdifferent | 1-5 | 1-3 | Designers, developers as users, and facilitation | 1-5 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Test Card with a pre-set threshold | ADR File, Decision Log, Rationale | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Learning Card with evidence and next action |
Tagsno overlap | ExperimentsValidationDiscoveryHypothesis | ArchitectureRationaleDocumentationGovernance | ArchitectureEngineeringFeedbackValidationTasks | ExperimentsValidationDiscoveryLearning |