The concept related to the structuring of services invocation is called orchestration. In particular, the more common standard used for this concept is WS-BPEL (Business Process Execution Language) (version 1.1 and 2.0).

The concept related to the control of workflow execution is called choreography. There was first a standard that emerged (WS-CDL for Choreography Description Language), but the more recent standard BPMN 2.0 provides choreography and even orchestration representation facilities.


Contrary to orchestration, that corresponds to a centralized view point of the aggregation (in the manner of a conductor driving his musicians), choreography corresponds to a decentralized view point (in the manner of a ballet mechanism).

Research results related to this thematic are:
* [EasyVIPER|easyviper:EasyViper Overview], a generic SOA workflow engine with reconfiguration,

Research issues related to this thematic are workflow dynamicity and adaptability. This is faced in our products by a component-based architecture, allowing reflexivity, introspection and runtime reconfiguration.



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