Hello Chris May,
RadCompression is not
designed to be a complete replacement for other HTTP compression tools, such as the built-in HTTP Compression in IIS 7. Instead, it is designed to work with those existing tools to cover scenarios they usually miss - namely the compression of bits moving back and forth in AJAX (and now Silverlight) applications. If you have HTTP Compression enabled in IIS7, you'll discover that it does not
compress your AJAX and Web Service responses; it only compresses the initial bits sent to the browser when the page is requested.
For more information please see this help article:
the Telerik team
Registration for Q1 2011 What’s New Webinar Week is now open. Mark your calendar for the week starting March 21st and book your seat
for a walk through all the exciting stuff we ship with the new release!