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| Criterion |  Product Discovery Concierge MVP |  Operations 5 Whys |  Architecture ARID (Active Reviews for Intermediate Designs) |  Operations Root Cause 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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | 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. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 1-4 Wochen | 15-30 min | 2–4 h review as a planning range; preparation and evaluation additional | 1-4 h |
Participantsdifferent | 3-10 Kunden | 2-6 | Designers, developers as users, and facilitation | 3-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Concierge Learnings, Service Blueprint, MVP Risks | Root cause notes, Countermeasures | 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 |
Tagsno overlap | MVPValidationServiceDiscovery | Root causeIncidentLeanProblem solving | ArchitectureEngineeringFeedbackValidationTasks | Root causeProblem solvingQualityIncident |