The following are the ASP.NET enhancements in .NET Framework 3.5
1. Development support for AJAX-enabled Websites.
2. Support provided for LINQ (Language-Integrated Query).
4. ASP.NET Merge tool (Aspnet_merge.exe) allows you to combine and manage the assemblies that are
created by pre-compilation tool Aspnet_compiler.exe.This merge tool builds the single assemblies
for the website. Earlier add-on was released for Visual studio 2005 to build the assembly.
5. Web application project model supported in this version. This feature easily allows us to migrate the
visual studio 2003 websites to the current version
6. One instance of Web application can target the .net framework version 2.0,3.0 and 3.5
7. Support has been given to ASP.NET Ajax extender controls
8. WCF Services can be consumed in the web project.
9. Intellisense Support is provided for LINQ.
10. AJAX enabled sites can access the web services and WCF services.