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| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  Operations Root Cause Analysis |  Innovation Lean Startup |  Operations 5 Whys |
|---|---|---|---|---|
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 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 uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | 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. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 1-4 h | Wochen bis Monate je Lernzyklus | 15-30 min |
Participantsdifferent | Designers, developers as users, and facilitation | 3-8 | 2-8 | 2-6 |
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 | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Root cause notes, Countermeasures |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | Root causeProblem solvingQualityIncident | LeanStartupValidationMVP | Root causeIncidentLeanProblem solving |