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

Criterion	Product Discovery Concierge MVP	Architecture ARID (Active Reviews for Intermediate Designs)	Operations Root Cause Analysis	Operations Root Cause Tree Analysis
Purposedifferent	When an idea can first fail or grow through genuine hands-on support, it relies on manual work instead of automation. It shows whether user value holds up even under manual execution.	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 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	1-4 Wochen	2–4 h review as a planning range; preparation and evaluation additional	1-4 h	1-3 h
Participantsdifferent	3-10 Kunden	Designers, developers as users, and facilitation	3-8	2-8
Formatdifferent	Workshop + async	Workshop + async	Workshop + async	Workshop
Outputdifferent	Concierge Learnings, Service Blueprint, MVP Risks	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan	Cause Tree, Evidence Notes, Countermeasures
Tagsno overlap	MVPValidationServiceDiscovery	ArchitectureEngineeringFeedbackValidationTasks	Root causeProblem solvingQualityIncident	Root causeTreeIncidentQuality

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