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Selected:ARID (Active Reviews for Intermediate Designs)8D Problem Solving Fake Door Test MVP Test Matrix

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Operations 8D Problem Solving	Product Discovery Fake Door Test	Product Discovery MVP Test Matrix
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 an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly.	When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small.	When several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan.
Complexitydifferent	Medium	High	Medium	Medium
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	1-6 Wochen	1-5 Tage	45-75 min
Participantsdifferent	Designers, developers as users, and facilitation	4-10	Nutzertraffic	2-8
Formatdifferent	Workshop + async	Workshop + async	Async	Workshop
Outputdifferent	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan	Click Data, Interest Signal, Learning Decision	Test Matrix, Test Plan
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	QualityProblem solvingRoot cause	ValidationExperimentsDemandDiscovery	ExperimentsValidationDiscoveryOptions

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