Christian passed along a tip for when creating cached ArcGIS server map services that he picked up at this year’s ESRI International User Conference. When creating a cached map service, create an ArcMap “group layer” containing all the layers for each specific scale level.

By grouping layers by scale, you can quickly turn off and on the groups to define symbology and labels for each without concerning yourself with the other scale levels. You can also tell at a quick glance what information is available at each scale level.