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Selected:ARID (Active Reviews for Intermediate Designs)After-Action Review Starfish Retrospective Learning Card

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Operations After-Action Review	Agile Starfish Retrospective	Product Discovery Learning Card
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.	After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement.	When improvement options need to be sorted more finely than just start and stop, it brings observations into clear kinds of action. This makes visible what should be done more, less, newly, or continued.	The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible.
Complexitydifferent	Medium	Low	Low	Low
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	20-45 min	45-90 min	25-40 min
Participantsdifferent	Designers, developers as users, and facilitation	3-12	4-12	1-5
Formatdifferent	Workshop + async	Workshop + async	Workshop	Workshop + async
Outputdifferent	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Lessons learned, Action items, Event summary	Starfish Board, Practice Changes, Experiments	Learning Card with evidence and next action
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	LearningOperationsImprovement	RetrospectiveImprovementExperimentsTeam	ExperimentsValidationDiscoveryLearning

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