Depending of the context, EPP has different meanings.

An Endpoint Protection Platform is a platform for the protection and detection of computer attacks on a client computer.

An Extensible Provisioning Protocol is an XML-based Internet communication protocol for exchanges between registries and registrars. This method, unified and common between the actors, allows to make all the operations related to the domains in a secure way.

An Enhanced Parallel Port is a type of bidirectional advanced parallel port provided by the IEEE 1284 standard that increases the speed of the standard parallel port. It is the ancestor of the ECP port.

Enhanced Parallel Port