Are you a WCF noob? Don't be ashamed, everyone is a noob at some point. But don't stay that way, learn something so you can shed your noobness. In this episode Ron Jacobs walks you through the process of creating your first WCF service and teaches you the about the ABCs of WCF

Jennifer Marsman highlights the different ways we can communicate with services using the Send activity in Windows Workflow. We'll walk through using the Send activity to call a Request-Reply MEP, a datagram (one-way) MEP, and by using a messaging approach to explicitly model sending and receiving.

Jennifer Marsman walks through duplex messaging, where two workflows communicate with each other. This is accomplished by explicitly forwarding the callback context to the service and letting it use that to message back to the caller.

Jennifer Marsman demonstrates how context is exchanged between two parties in a conversation, and how we can obtain the context and explicitly manage it to enable additional clients to participate in the workflow.

Jennifer Marsman demonstrates using a WPF calculator to call a durable instance of a WCF service, which will store its state within a persistence database, similar to what happens with Workflow.