Service-Oriented Architecture (SOA) is a way of organizing software. If your company's development projects adhere to the principles of SOA, the outcome will be an inventory of modular units called "services," which allow for a quick response to change. This book tells the SOA story in a simple, straightforward manner that will help you understand not only the buzzwords and benefits, but also the technologies that underlie SOA: XML, WSDL, SOAP, XPath, BPEL, SCA, and SDO. And through it all, the authors provide business examples and illustrations, giving a practical meaning to abstract ideas.