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Selected:Concierge MVP ARID (Active Reviews for Intermediate Designs)Architecture Decision Record Fake Door Test

Criterion	Product Discovery Concierge MVP	Architecture ARID (Active Reviews for Intermediate Designs)	Architecture Architecture Decision Record	Product Discovery Fake Door Test
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.	An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable.	When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small.
Complexitydifferent	Medium	Medium	Low	Medium
Timedifferent	1-4 Wochen	2–4 h review as a planning range; preparation and evaluation additional	15-45 min	1-5 Tage
Participantsdifferent	3-10 Kunden	Designers, developers as users, and facilitation	1-3	Nutzertraffic
Formatdifferent	Workshop + async	Workshop + async	Async	Async
Outputdifferent	Concierge Learnings, Service Blueprint, MVP Risks	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	ADR File, Decision Log, Rationale	Click Data, Interest Signal, Learning Decision
Tagsno overlap	MVPValidationServiceDiscovery	ArchitectureEngineeringFeedbackValidationTasks	ArchitectureRationaleDocumentationGovernance	ValidationExperimentsDemandDiscovery

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