Thomas Erl is the world's top-selling SOA author and the Series Editor of the Prentice Hall Service-Oriented Computing Series from Thomas Erl "http://www.soabooks.com/" His first two books, Service-Oriented Architecture: A Field Guide to Integrating XML and Web Services and Service-Oriented Architecture: Concepts, Technology, and Design have become international bestsellers and have been formally endorsed by senior members of major software organizations, such as IBM, Sun, and Microsoft. Thomas is also the founder of SOA Systems Inc. “http://www.soasystems.com/"a company specializing in SOA training and strategic consulting services with a vendor-agnostic focus. Through his work with standards organizations and independent research efforts, Thomas has made significant contributions to the SOA industry, most notably in the areas of service-orientation and SOA methodology. Thomas has had numerous articles and papers published on Web sites and in industry trade magazines, and is a speaker and instructor for private and public events. To learn more, visit “http://www.thomaserl.com/"