Interface Point of interaction between components, allowing them to function independently. <a href="http://en.wikipedia.org/wiki/Interface_(computer_science)">http://en.wikipedia.org/wiki/Interface_(computer_science)</a> Its specification is a precise description of the exchanged messages and of their sequence. <a href="http://en.wikipedia.org/wiki/Interface_(object-oriented_programming)">http://en.wikipedia.org/wiki/Interface_(object-oriented_programming)</a> Interoperability evidently requires standardization of client interfaces.