Preface
When XML was first introduced, it was hailed as the cornerstone of a new kind of technology that would permit interoperable businesses. XML provided a generic way to represent structured and typed data. Even though it has taken several years, XML standards have started to evolve and multiply. As part of this evolution, XML has been incorporated into every facet of application and enterprise development. XML is now a part of operating systems, networking protocols, programming languages, databases, application servers, web servers, and so on. XML is used everywhere.
Starting in 1998, XML was incorporated into a number of networking protocols with the intention of providing a standard way for two pieces of software to communicate with each other. The Simple Object Access Protocol (SOAP) and XML-RPC specifications blew the doors wide open on the distributed-computing environment by providing a platform-independent way for software to communicate. Even more astounding, nearly every major software company supported SOAP. The instant success of SOAP created the potential for interoperability at a level that has never been seen before. SOAP became the cornerstone protocol of the web services revolution that is going on today.
After SOAP, the Web Services Description Language (WSDL) and Universal Discovery, Description, Integration (UDDI) specifications were introduced with an equal amount of industry support. Other specifications were rapidly introduced, including ebXML, OASIS ...
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