Once you know the requirements of your application, you can decide which technology is the best to use. The following table lists some scenarios and the recommended networking and Web services technology for implementing them, as well as links to topics that show you how to use that technology.

Scenario	Recommended Technology	Documentation
Create an end-to-end business application, expose data as a Web service, and create a client to consume the data	WCF RIA Services	WCF RIA Services
Access data from a third-party REST service	Specify client HTTP handling, and use the WebClient or HttpWebRequest/HttpWebResponse classes	HTTP Communication and Security with SilverlightorAccessing HTTP and REST-Based Services Directly
Provide access to an existing database using REST services	WCF Data services	WCF Data Services (Silverlight)
Access server business logic	WCF services	How to: Access a Service from Silverlight
Create a chat application	WCF services	Building and Accessing Duplex Services
Stream the same data across an intranet to many clients at the same time	UDP multicast	Working with Multicast
Build and access a new sockets service for duplex messaging	Duplex with netTCP	Building and Accessing Duplex Services
Build and access a new sockets service for duplex messaging across the Internet	Polling duplex with HTTP	Building and Accessing Duplex Services
Access an existing or third-party sockets service for duplex messaging	TCP using sockets	Working with Sockets
Stream market data	UDP multicast	Working with Multicast
Provide video and media streaming	UDP multicast	Working with Multicast
Provide real-time communication	UDP multicast	Working with Multicast
Device and service discovery	UDP multicast	Working with Multicast

Looking for quality Silverlight Hosting? Look no further than Arvixe Web Hosting!