Produced by the OASIS WS-BPEL Technical Committee, this primer is a supplementary document to WS-BPEL 2.0 specifications. The primer provides a brief explanation of all the key features of WS-BPEL with the help of a practical use case and numerous examples. The primer is intended towards business process analysts, software developers/architects and system integrators who want to know the basics features of WS-BPEL. A basic knowledge of XML, WSDL and any programming language is essential for a better understanding of this document.