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| Criterion |  Agile T-Shirt Sizing |  Operations Gemba Walk |
|---|---|---|
Purposedifferent | When effort only needs to be classified roughly, it makes comparability more important than false precision. It helps sort work quickly into manageable sizes. | 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. |
Complexitysame | Low | Low |
Timedifferent | 15-45 min | 30-120 min |
Participantsdifferent | 2-12 | 2-6 |
Formatdifferent | Workshop + async | Workshop |
Outputdifferent | Size Buckets, Rough Backlog Map, Split Candidates | Observation Notes, Improvement Ideas |
Tagsno overlap | EstimationAgileRoadmap | LeanObservationProcessOperations |
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