Due for release in the second half of 2002, .NET My Services represents the first major release into Microsoft's .NET initiative since the .NET Framework beta was released in September 2000. Until recently known by the project name HailStorm, it is the first publicly available web services application platform to be released. This represents a true commitment by Microsoft to the ideals of developing the next generation of web service-based applications that are both language and operating system independent. Early Adopter HailStorm looks at the first public release of .NET My Services Developer Edition, or HailStorm in a Box as it was called, dispelling the myths that have surrounded it since it was first announced, and how to develop against it. In particular, we look at creating HailStorm compatible SOAP messages, how XML standards-compliant this release is, and how information is added to, updated and deleted from the various services that it implements. Finally, a couple of case studies illustrate how HailStorm may be integrated into real world scenarios. Who is the book for? Developers interested in building applications against a set of XML-based web services. The emphasis in this book is on development using Windows, but everything applies equally to development on Linux, Unix, Mac and other platforms. This book was written in time for the official beta release of HailStorm at Microsoft's PDC in October 2001, and while we can't guarantee the code will be correct for version 1.0's release in 2002, the concepts and explanations should still be valid. What does this book cover? HailStorm as it will be in version 1.0; HailStorm as it is today; Using SOAP and XPath to talk to HailStorm; HailStorm Data-manipulation Language (HSDL); Practical case studies.