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Selected:ARID (Active Reviews for Intermediate Designs)Barrier Analysis A/B Testing Assumption Mapping

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Operations Barrier Analysis	Growth A/B Testing	Product Discovery Assumption Mapping
Purposedifferent	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.	For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions.	When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects.	When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.
Complexitydifferent	Medium	Medium	High	Medium
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	2-4 h	1-4 Wochen	45-60 min
Participantsdifferent	Designers, developers as users, and facilitation	2-6	1-6	2-8
Formatdifferent	Workshop + async	Workshop + async	Async	Workshop + async
Outputdifferent	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Barrier Inventory, Failure Analysis per Barrier, Action Backlog	Experiment results, Decision log, Learning summary	Assumption map, Test backlog, Risk ranking
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	Root causeSafetyIncident	ExperimentsGrowthAnalyticsValidation	AssumptionsRiskExperimentsValidation

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