I am writing a web mapping application and I use ArcGIS Server services. I want the application to use Google Maps as a base map. I am new to this job. I have searched a lot on the Internet. But I could not find anything useful. Is there anyone who could help me in this matter. Sample site are shown below.
As stated in other answer, using google's map tile directly violates their TOS. If you are not married to Silverlight, you can approach this from a different angle and overlay arcgis services onto a google map instead of inserting a google basemap into an arcgis map.
You still need to be compliant with google's TOS, but you have much greater flexibility when you build on top of google's gmap.
Google licensing terms generally prohibit accessing their tile service from outside of the controls they provide.
How about using Add Data from GIS Online which is provided by ESRI, it will also serves you as Google maps you are looking for.
Hope this helpful.!