ISO 20106:2015 defines, in an abstract manner, the COM in terms of:
a) the operations necessary to provide the service;
b) the parameter data associated with each operation;
c) the required behaviour of each operation;
d) the use of the model.
It does not specify:
a) individual implementations or products;
b) the implementation of entities or interfaces within real systems;
c) the methods or technologies required for communications.