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Selected:ARID (Active Reviews for Intermediate Designs)Change Analysis Root Cause Analysis Root Cause Tree Analysis

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Operations Change Analysis	Operations Root Cause Analysis	Operations Root Cause Tree Analysis
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 deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise.	When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another.	For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie.
Complexitysame	Medium	Medium	Medium	Medium
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	45-120 min	1-4 h	1-3 h
Participantsdifferent	Designers, developers as users, and facilitation	2-6	3-8	2-8
Formatdifferent	Workshop + async	Workshop + async	Workshop + async	Workshop
Outputdifferent	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Change Matrix, Cause Hypotheses, Validation Questions, Action List	Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan	Cause Tree, Evidence Notes, Countermeasures
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	ChangeRoot causeTroubleshootingComparison	Root causeProblem solvingQualityIncident	Root causeTreeIncidentQuality

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