Setting up, modification or termination of interoperation between two or more involved parties with minimal effort.

Note 1: The interoperability of those involved is assumed.

Note 2: The minimum effort can vary depending on the state of the art.

Note 3: Plug & play and plug & produce are synonyms or similar terms.

Entirety of procedures in a system by means of which the material, energy or information is transformed, transported or stored.

Model of a process as a system of coupled part-processes.