Advance thanks to all I developed a website using ArcGIS 10 Desktop which is wrking fine. Nw the problem is each time zooming and pan the map will take 10-12 seconds time to load map in my map application. Y it is taking too much time. Map data is in ArcGIS server 10.1. Server having 24 GB RAM and and server 2008R2 machine. when I checked tutorial in http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#CustomZoomBox , It is very faster and not even taking 1 sec to load the map. what is the problem in my case? I want the same way view of map in my application. Can anybody help me to solve the issue?