EPP is the Extensible Provisioning Protocol, used by domain name registrars to communicate with registries in order to manage their objects: domains, contacts, hosts, etc.
EPP is the Extensible Provisioning Protocol, defined by STD 69 (currently RFCs 5730, 5731, 5732, 5733, and 5734). It is used by domain name registrars to communicate with registries in order to manage their objects: domains, contacts, hosts, etc.