A Port represents an interaction point through which a Classifier communicates with its environment. An Interface associated with a Port specifies the nature of the interactions that may occur over it.
The provided Interfaces of a Port characterize requests to the Classifier that its environment may make through this Port. The owning Classifier must offer the Features owned by the provided Interfaces.
Specifying ‘Provided’ and ‘Required’ Ports for a Classifier
You specify ‘Provided’ and ‘Required’ Ports for a Classifier through its interface(s).