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Selected:Architecture Decision RecordARID (Active Reviews for Intermediate Designs)Learning CardRiskiest Assumption Test
| Criterion |  Architecture Architecture Decision Record |  Architecture ARID (Active Reviews for Intermediate Designs) |  Product Discovery Learning Card |  Product Discovery Riskiest Assumption Test |
|---|---|---|---|---|
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. | 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. | When an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. |
Complexitydifferent | Low | Medium | Low | Medium |
Timedifferent | 15-45 min | 2–4 h review as a planning range; preparation and evaluation additional | 25-40 min | 1-2 Wochen pro Iteration |
Participantsdifferent | 1-3 | Designers, developers as users, and facilitation | 1-5 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | 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 | Prioritized Assumption List, Test Plan, Results Report |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | ArchitectureEngineeringFeedbackValidationTasks | ExperimentsValidationDiscoveryLearning | ExperimentsValidationDiscoveryAssumptions |