The initial work of the Coalition focused on publishing the Reference Model and Glossary, defining a common architecture and terminology for the industry. A major milestone was achieved with the publication of the first versions of the Workflow API (WAPI) specification, covering the Workflow Client Application Interface, and the Workflow Interoperability specification. The Audit Data specification was added in 1997, being followed by the Process Definition Import/Export specification. A further version of WAPI covers Application Invocation API·s, completing the Coalition·s initial deliverables across the five interface functions. Further work includes the completion of a common object model with object bindings for IDL and OLE, interoperability extensions for security, and additional interoperability models. The Coalition has validated the use of its specifications through international demonstrations and prototype implementations. In direct response to growing user demand, live demonstrations of a workflow interoperability scenario have shown how business can successfully exchange and process work across multiple workflow products using the Coalition·s specifications.
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