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

Criterion	Architecture Architecture Decision Record	Architecture ARID (Active Reviews for Intermediate Designs)	Product Discovery Test Card	Product Discovery Experiment Canvas
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 Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success.	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.
Complexitydifferent	Low	Medium	Low	Low
Timedifferent	15-45 min	2–4 h review as a planning range; preparation and evaluation additional	20-35 min	30-60 min
Participantsdifferent	1-3	Designers, developers as users, and facilitation	1-5	1-5
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	Test Card with a pre-set threshold	Completed Experiment Canvas, Success Metric
Tagsno overlap	ArchitectureRationaleDocumentationGovernance	ArchitectureEngineeringFeedbackValidationTasks	ExperimentsValidationDiscoveryHypothesis	ExperimentsValidationDiscoveryHypothesis

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