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| Criterion |  Operations A3 Problem Solving |  Knowledge Modeling Domain Storytelling |  Operations After-Action Review |  Operations Gemba Walk |
|---|---|---|---|---|
Purposedifferent | 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. | Domain Storytelling translates domain knowledge into a shared narrative of actors, objects, and workflows. It is especially useful when language, rules, and process understanding must be tightly connected. | After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 45-90 min | 1-2 h | 20-45 min | 30-120 min |
Participantsdifferent | 2-5 | 2-8 | 3-12 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Domain Story, Glossary Notes, Process Narrative | Lessons learned, Action items, Event summary | Observation Notes, Improvement Ideas |
Tagsno overlap | LeanProblem solvingCoachingOperations | KnowledgeDomain-Driven DesignProcess | LearningOperationsImprovement | LeanObservationProcessOperations |