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| Criterion |  Operations Gemba Walk |  Operations ALPEN Method |  Architecture C4 Model |
|---|---|---|---|
Purposedifferent | 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. | 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. | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. |
Complexitysame | Low | Low | Low |
Timedifferent | 30-120 min | 10-20 min daily | 1-4 h |
Participantsdifferent | 2-6 | 1 | 1-5 |
Formatdifferent | Workshop | Async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Daily Plan, Time Estimates, Review Notes | Context Diagram, Container Diagram, Component Diagram |
Tagsno overlap | LeanObservationProcessOperations | PlanningTime managementProductivityOperations | ArchitectureCommunicationVisualization |
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