http://blogs.msdn.com/wenlong/archive/2007/09/18/how-to-use-asmx-extension-to-handle-wcf-requests.aspxFor backward compatibility, WCF supports easy server-side migration from ASMX to WCF. This is good news for existing ASMX customers. Generally, the clients of ASMX may have server Urls hard-coded with the extension “.asmx”. For example, here is a sampleen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/wenlong/archive/2007/09/18/how-to-use-asmx-extension-to-handle-wcf-requests.aspx#9001820Thu, 16 Oct 2008 17:08:14 GMT91d46819-8472-40ad-a661-2c78acb4018c:9001820PittGeek &raquo; Blog Archive &raquo; WCF Services with the .asmx extension<p>PingBack from <a rel="nofollow" target="_new" href="http://pittcrew.net/geekblog/2008/10/16/wcf-services-with-the-asmx-extension/">http://pittcrew.net/geekblog/2008/10/16/wcf-services-with-the-asmx-extension/</a></p>