A Machine is any part of the workflow system designed to execute a Process. Most often, this term refers to a piece of physical equipment, such as a press or a binder, but it can also refer to the software components used to run a particular Machine. Computerized workstations, whether run through automated batch files or controlled by a human worker, are also considered Machines if
they have no JDF interface.
(Source: JDF Spec. 1.4a)