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Selected:ARID (Active Reviews for Intermediate Designs)Bottleneck Analysis A3 Problem Solving Goal Question Metric

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Operations Bottleneck Analysis	Operations A3 Problem Solving	Engineering Goal Question Metric
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 flow that backs up at one point, the method looks for the capacity limit with the greatest leverage. It explains why extra effort elsewhere barely improves throughput.	For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together.	Helps clarify technical problems, hypotheses, and next steps in concrete terms. It breaks a technical problem into testable parts. The result is captured as a GQM table and metric briefs.
Complexitysame	Medium	Medium	Medium	Medium
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	1-3 h	45-90 min	90-180 min
Participantsdifferent	Designers, developers as users, and facilitation	3-8	2-5	3-6
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	Bottleneck Map, Flow Metrics, Improvement Options, Follow-up Measures	A3 Report, Action Plan, Root Cause Analysis	GQM Table, Metric Profiles
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	FlowMeasurementConstraints	LeanProblem solvingCoachingOperations	MetricsMeasurementEngineeringAlignment

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