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| Criterion |  DevOps Game Day |  Systems Thinking Future Reality Tree |  Operations Gemba Walk |  Operations A3 Problem Solving |
|---|---|---|---|---|
Purposedifferent | In preparing for rare incidents, the method tests response capability under controlled conditions. It shows where assumptions about stability, roles, and recovery are too optimistic. | A Future Reality Tree shows how desired actions are meant to lead to a better system state. The method checks whether a path of change holds together logically before time flows into implementation. | 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. | 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 | High | High | Low | Medium |
Timedifferent | Halber Tag | 2-4 h | 30-120 min | 45-90 min |
Participantsdifferent | 5-20 | 3-8 | 2-6 | 2-5 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Simulation Notes, Gaps List, Updated Runbooks | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Observation Notes, Improvement Ideas | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | ResilienceOperationsIncident | Theory of ConstraintsSystems thinkingChange | LeanObservationProcessOperations | LeanProblem solvingCoachingOperations |