As a developer new to Web Services, how do you make sense of thisemerging framework so you can start writing your own servicestoday? This concise book gives programmers both a concreteintroduction and a handy reference to XML web services, first byexplaining the foundations of this new breed of distributedservices, and then by demonstrating quick ways to create serviceswith open-source Java tools. Web Services make it possible fordiverse applications to discover each other and exchange dataseamlessly via the Internet. For instance, programs written in Javaand running on Solaris can find and call code written in C# thatrun on Windows XP, or programs written in Perl that run on Linux,without any concern about the details of how that service isimplemented. A common set of Web Services is at the core ofMicrosoft's new .NET strategy, Sun Microsystems's Sun One Platform,and the W3C's XML Protocol Activity Group. In this book, authorEthan Cerami explores four key emerging technologies: XML Remote Procedure Calls (XML-RPC) SOAP - The foundation for most commercial WebServices development Universal Discovery, Description and Integration(UDDI) Web Services Description Language (WSDL) For each of these topics, Web Services Essentials provides aquick overview, Java tutorials with sample code, samples of the XMLdocuments underlying the service, and explanations offreely-available Java APIs. Cerami also includes a guide to thecurrent state of Web Services, pointers to open-source tools and acomprehensive glossary of terms. If you want to break through theWeb Services hype and find useful information on these evolvingtechnologies, look no further than Web Services Essentials.