XML Schema is one of the most important facets of Web Services. It is the ultimate type system; however it is also really arcane to learn a figure out how to leverage. Drill into what's important for you understand in order to get the most out of specification. Learn about schema creation best practices, where to start and what tools to use, versioning, serialization and validation of messages. Walk away with a clear understanding on how and why to use XML Schema, .NET Framework support and how schema drives WSDL and Web Service message parsing.