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Selected:ARID (Active Reviews for Intermediate Designs)Kepner-Tregoe Barrier Analysis 8D Problem Solving

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Operations Kepner-Tregoe	Operations Barrier Analysis	Operations 8D Problem Solving
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 disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations.	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.	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.
Complexitydifferent	Medium	High	Medium	High
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	2-8 h	2-4 h	1-6 Wochen
Participantsdifferent	Designers, developers as users, and facilitation	2-8	2-6	4-10
Formatsame	Workshop + async	Workshop + async	Workshop + async	Workshop + async
Outputdifferent	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Problem Analysis, Decision Analysis, Risk Plan	Barrier Inventory, Failure Analysis per Barrier, Action Backlog	8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	Problem solvingRoot causeDecisionOperations	Root causeSafetyIncident	QualityProblem solvingRoot cause

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