Teach yourself the essentials of Windows Communication Foundation 4 -- one step at a time. With Step by Step, you get hands-on guidance for creating the Web services you need to implement robust business applications for Windows. This book provides practical hands-on examples to help you grasp concepts and apply techniques to the real world. * Learn how to build and host a Web service * Design service contracts and data contracts * Control configuration and communications programmatically * Implement message encryption, authentication, and authorization * Manage identity with Windows CardSpace * Use Windows Workflow Foundation to implement complex, scalable business services * Optimize performance with service throttling, encoding, and streaming * Use ASP.NET and COM+ to create services that interoperate Your companion content includes: * Practice exercises * Code samples * Fully searchable online edition of the book -- with unlimited access on the Web