Various systems and methods are described implementing a multi-access edge computing (MEC) based system to realize MEC application registration and application data functions for MEC frameworks. In an example, operations are performed at a MEC orchestrator to maintain a registry of applications within a MEC system or among a federation of MEC systems, with the MEC orchestrator performing operations including: identifying, based on the communications with a plurality of MEC hosts, a plurality of applications provided by the MEC hosts in the MEC system (or, by applications provided by a plurality of MEC hosts in a federation); storing and synchronizing application information for the plurality of applications in a registry; and communicating the application information from the registry to an entity of the MEC system or to an entity federated with the MEC system.