.NET Framework 3.5 contains a number of new features in several technology areas. These new features have been added as new assemblies to avoid breaking changes. The features comprise deep integration of Language Integrated Query (LINQ) and data awareness. ASP.NET AJAX lets you create more efficient, more interactive, and highly-personalized web experiences that work across all the most popular browsers.New Web protocol support for building WCF services including AJAX, JSON, REST, POX, RSS, ATOM, and several new WS standards.

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