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| Criterion |  Operations Barrier Analysis |  Product Strategy Lean Canvas |  Operations 5 Whys |  Operations A3 Problem Solving |
|---|---|---|---|---|
Purposedifferent | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | 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. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 2-4 h | 45-90 min | 15-30 min | 45-90 min |
Participantsdifferent | 2-6 | 1-6 | 2-6 | 2-5 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Lean Canvas, Core Assumptions, Experiment Backlog | Root cause notes, Countermeasures | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | Root causeSafetyIncident | StartupLeanAssumptionsBusiness model | Root causeIncidentLeanProblem solving | LeanProblem solvingCoachingOperations |