Orchestration: like in an orchestra, there’s a man (the director) that says to all the musicians what to do. They’re therefore synchronized by following the direction of one person.
In practice when orchestration is in place, a central system says to some remote systems what to do.
A single remote system knows what to do and also what other systems to call after he ends his processing.
https://www.theserverside.com/discussions/thread/37838.html – BY Marcello Braucci