How is the symbology of the ArcGIS Server map service controlled?
ArcGIS Desktop tools are used to author the map and its symbology, which are served by ArcGIS Server. The ArcGIS for AutoCAD user sees the same map as the ArcGIS Desktop user, ensuring consistency and clear communication of the meaning of the map for all users of the information. In the map service management panel, you can turn layers of a map on or off.