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| Criterion |  Innovation Lean Startup |  Architecture ARID (Active Reviews for Intermediate Designs) |  DevOps Incident Command |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | During an acute incident with several people involved, the method creates a clear leadership and communication structure. It reduces chaos when fast coordination and clean situational awareness are both needed at once. | 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 | Wochen bis Monate je Lernzyklus | 2–4 h review as a planning range; preparation and evaluation additional | As needed | 15-30 min |
Participantsdifferent | 2-8 | Designers, developers as users, and facilitation | 4-15 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Incident Log, Action Tracker, Stakeholder Updates | Root cause notes, Countermeasures |
Tagsno overlap | LeanStartupValidationMVP | ArchitectureEngineeringFeedbackValidationTasks | IncidentOperationsReliability | Root causeIncidentLeanProblem solving |