Orchestration definition in Computer Security terms:
Definition(s): Defines the sequence and conditions in which one Web service invokes other Web services to realize some useful function. An orchestration is the pattern of interactions that a Web service agent must follow to achieve its goal.
Source(s): NIST SP 800-95 (Web Services Glossary – W3C Working Group Note 11 February 2004)
reference: CSRC Glossary