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The Web Services Choreography Description Language (WS‑CDL) is an XML-based specification to describe global interactions (choreographies) among web services. It models message flows from the perspective of all participants rather than a central orchestrator. WS‑CDL supports design of distributed protocols but saw limited industry uptake.
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WS-CDL is an XML language for describing shared interactions among web services.
WS-CDL was developed at the W3C in response to the need to describe observable message and role flows across multiple web services. Its W3C Recommendation appeared in 2005.
A choreography describes the permitted order of interactions from the shared view of participating roles; it does not implement an individual service.
The approach combines core building blocks and flows.
Its use depends on the concrete task.
WS-CDL fits coordinating distributed roles and interactions when the flow is considered across multiple services.
WS-CDL makes the permitted message flows of multiple web services describable as a shared choreography.
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