WS-CDL
Web Services Choreography Description Language (abbreviated as WS- CDL ) is the part of the so-called WS -* specifications. She is an XML - based language that peer-to- peer communications between different actors describes web service by (not from the perspective of participants ) respectively the observable behavior of the players is defined from an observer's perspective.
WS- CDL is, as the name says, a choreography language as opposed to a Orchestrierungssprache such as WS- BPEL.