Difference Between WCF Service, WCF RIA Services, and WCF Data Service

Question

What is the difference between WCF Service, WCF RIA Services and WCF Data Services?

Answer 1

WCF is a communication infrastructure for services in general. WCF RIA services automatically generates client and server proxy objects to facilitate application development, and depends upon WCF to do the actual communication. ADO.Net data services has been renamed to WCF Data Services, and provides OData services over WCF.