A Web Service Architecture Based on BizTalk RAO Wen-bi,HUANG Bo, XIONG Hui-yue(School of Computer Sciences and Technology, Wuhan University of Technology, Wuhan 430070, China)The concepts of BizTalk and Web Service were introduced and the architecture of both systems was discussed. A kind of Web Service based on BizTalk was given. Unlike other web services, with the message integration and automatic business process of the BizTalk, it became a robust, asynchronous and transactional XML web Service. In addition, it acted as a run-time long, couple and distributed business process.BizTalk; XML Web Service; SOAP