Essential Windows Communication Foundation: For .NET Framework 3.5
by Steve Resnick, Richard Crane, Chris Bowen
11. Workflow Services
AT THIS POINT IN THE BOOK, you already know that WCF is all about services—it’s about defining, building, and securing services. Services have well-defined boundaries formally described in their contract, but the inner workings are entirely opaque outside the service. WCF says little about the service implementation; it simply provides the interfaces to reliably and securely exchange messages with clients.
Windows Workflow Foundation (WF) is complementary technology to WCF. It’s all about defining and executing activities of a multistep process (a.k.a. workflow). WF can model workflows that are sequential or event-driven in nature. The WF runtime executes activities by branching, looping, forking, and joining the execution ...
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