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Selected:ARID (Active Reviews for Intermediate Designs)4Ls Retrospective Fake Door Test MVP Test Matrix

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Agile 4Ls Retrospective	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.	When a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time.	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	Low	Medium	Medium
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	45–75 min	1-5 Tage	45-75 min
Participantsdifferent	Designers, developers as users, and facilitation	Team members involved	Nutzertraffic	2-8
Formatdifferent	Workshop + async	Workshop	Async	Workshop
Outputdifferent	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	4Ls Board, Learning Themes, Improvement Actions	Click Data, Interest Signal, Learning Decision	Test Matrix, Test Plan
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	RetrospectiveLearningReflectionTeam	ValidationExperimentsDemandDiscovery	ExperimentsValidationDiscoveryOptions

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