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Selected:Architecture Decision Record Experiment Canvas ARID (Active Reviews for Intermediate Designs)Test Card

Criterion	Architecture Architecture Decision Record	Product Discovery Experiment Canvas	Architecture ARID (Active Reviews for Intermediate Designs)	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.	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.	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 Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success.
Complexitydifferent	Low	Low	Medium	Low
Timedifferent	15-45 min	30-60 min	2–4 h review as a planning range; preparation and evaluation additional	20-35 min
Participantsdifferent	1-3	1-5	Designers, developers as users, and facilitation	1-5
Formatdifferent	Async	Workshop + async	Workshop + async	Workshop + async
Outputdifferent	ADR File, Decision Log, Rationale	Completed Experiment Canvas, Success Metric	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Test Card with a pre-set threshold
Tagsno overlap	ArchitectureRationaleDocumentationGovernance	ExperimentsValidationDiscoveryHypothesis	ArchitectureEngineeringFeedbackValidationTasks	ExperimentsValidationDiscoveryHypothesis

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