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| Criterion |  Operations ALPEN Method |  Operations Gemba Walk |  Operations Theory of Constraints |  Operations Bottleneck Analysis |
|---|---|---|---|---|
Purposedifferent | With an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. | 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 system that does not get faster despite effort, the method directs attention to the bottleneck. It concentrates improvement on the point that actually limits throughput. | For a flow that backs up at one point, the method looks for the capacity limit with the greatest leverage. It explains why extra effort elsewhere barely improves throughput. |
Complexitydifferent | Low | Low | High | Medium |
Timedifferent | 10-20 min daily | 30-120 min | 2-4 h Analyse, laufend | 1-3 h |
Participantsdifferent | 1 | 2-6 | 3-12 | 3-8 |
Formatdifferent | Async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Daily Plan, Time Estimates, Review Notes | Observation Notes, Improvement Ideas | Constraint Map, Improvement Plan, Flow Metrics | Bottleneck Map, Flow Metrics, Improvement Options, Follow-up Measures |
Tagsno overlap | PlanningTime managementProductivityOperations | LeanObservationProcessOperations | OperationsConstraintsFlowImprovement | FlowMeasurementConstraints |