This paper aims to benefit from the advantages of the Web services on behalf of business process management. It proposes a Web service approach to manufacture agile processes in two main phases: design and discovery. On the one hand, it tries to answer the question: how to model business processes that are able to be performed by Web services? On the other hand, it describes a semantic matching algorithm in order to discover the appropriate Web services. The main strength of our approach resides in its alignment with standards. It uses BPMN and UML in order to design processes all through exploring Web service W3C standards: WSDL, SA WSDL and WS-Policy. In order to integrate and execute these processes, it uses BPEL standard.