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| Criterion |  Agile Ideal Days |  Agile T-Shirt Sizing |
|---|---|---|
Purposedifferent | When effort needs to be thought of as real working time, it offers a simple common denominator for comparison. It sorts work by value, risk, and delivery ability. The result is captured as Ideal Day Estimates, Assumption Notes, and Capacity Caveats. | When effort only needs to be classified roughly, it makes comparability more important than false precision. It helps sort work quickly into manageable sizes. |
Complexitysame | Low | Low |
Timedifferent | 15-60 min | 15-45 min |
Participantsdifferent | 2-9 | 2-12 |
Formatsame | Workshop + async | Workshop + async |
Outputdifferent | Ideal Day Estimates, Assumption Notes, Capacity Caveats | Size Buckets, Rough Backlog Map, Split Candidates |
Tags2 shared | EstimationEffortAgile | EstimationAgileRoadmap |
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