SOA and WS-BPEL: Composing Service-Oriented Solutions with PHP and ActiveBPEL

When utilized within a Service-oriented Architecture (SOA), Web Services are part of a business process determining the logical order of service activities logical units of work performed by one or more services. Today, the most popular tool for organizing service activities into business processes is Web Services Business Process Execution Language (WS-BPEL), a language defining an execution format for business processes operating on Web Services. While it is not a trivial task to define a business process definition with WS-BPEL from scratch, using a graphical WS-BPEL tool can significantly simplify this process.