UPDM: A contractual agreement between two resources that implement protocols through which the source service interacts to the destination resource. A physical connection between two resources that implements protocols through which the source resource can transmit items to the destination resource.
MODAF/NAF: The mechanism by which a Service communicates.
DoDAF: An overlap between Performers for the purpose of producing a Resource that is consumed by the other (DoDAF::Interface).
SOAML: Defines the interface to a Service Point or Request Point and is the type of a role in a service contract.