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Selected:ARID (Active Reviews for Intermediate Designs)Assumption Mapping Root Cause Analysis Failure Mode and Effects Analysis

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Product Discovery Assumption Mapping	Operations Root Cause Analysis	Operations Failure Mode and Effects 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.	When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.	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 process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability.
Complexitydifferent	Medium	Medium	Medium	High
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	45-60 min	1-4 h	2-6 h
Participantsdifferent	Designers, developers as users, and facilitation	2-8	3-8	3-10
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	Assumption map, Test backlog, Risk ranking	Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan	FMEA Table, Risk Priority, Mitigation Actions
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	AssumptionsRiskExperimentsValidation	Root causeProblem solvingQualityIncident	RiskQualityOperationsRoot cause

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