Web Ser Vices Orchestration a Review of Emerging Technologies, Tools, and Standards

Web services technologies are beginning to emerge as a defacto standard for integrating disparate applications and systems using open, XML-based standards. In addition to building web services interfaces to existing applications, there must also be a standard approach to connecting these web services together to form more meaningful business processes. In 2002, a number of new standards were introduced to address this problem, including BPEL4WS and WSCI. The purpose of this paper is to provide a review of these emerging standards, to help the reader better understand how web services orchestration can be accomplished today. It is assumed that the reader has an understanding of the basic web services standards, including SOAP, WSDL, and UDDI. Chris Peltz Hewlett Packard, Co. January 2003 © 2 0 0 2 2 0 0 3 H e w l e t t P a c k a r d C o m p a n y