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Selected:ARID (Active Reviews for Intermediate Designs)Business Model Stress Test Lean Canvas Assumption Mapping

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Business Strategy Business Model Stress Test	Product Strategy Lean Canvas	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.	A Business Model Stress Test checks how well a business model holds up under pressure and headwinds. It compares strengths, risks, market logic, and courses of action. The result is captured as a stress-test report and action plan per scenario.	When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable.	When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.
Complexitydifferent	Medium	High	Medium	Medium
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	Half day	45-90 min	45-60 min
Participantsdifferent	Designers, developers as users, and facilitation	3-8	1-6	2-8
Formatdifferent	Workshop + async	Workshop	Workshop + async	Workshop + async
Outputdifferent	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Stress Test Report, Action Plan per Scenario	Lean Canvas, Core Assumptions, Experiment Backlog	Assumption map, Test backlog, Risk ranking
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	StrategyBusiness modelRiskDiagnosis	StartupLeanAssumptionsBusiness model	AssumptionsRiskExperimentsValidation

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