Rich Internet Applications (RIAs) rely on tools such as Silverlight and Windows Phone 7 to present data to users in an interesting and interactive manner. With Windows Communication Foundation (WCF) 4, developers can use a unified programming model for accessing services and data in any Microsoft .NET Framework-based application – including RIAs. This session explores how you can leverage your WCF skills along with rich tooling to build distributed services for the RIA. This talk rationalizes the use case for WCF RIA Services, but focuses mostly on innovations in the core WCF feature set. The talk also shows how WCF simplifies talking to web2.0 services like Bing, REST based service. Also, learn how to build a WCF backend service that enables rich and high performance messaging to RIA Clients like a video chat. By the end of this session you will understand some of the powerful architectures available to you for building RIAs with WCF.