CAPIF
Common API Framework for 3GPP northbound APIs
In order to attempt to standardize some of the common capabilities that are exposed by the Northbound APIs, the 3GPP have introduced CAPIF (Common API Framework for 3GPP northbound APIs). Within the standardization of CAPIF, the 3GPP have addressed a variety of different processes, including onboarding/offboarding of Application Functions, service discovery and management, event subscription and notification, security and charging.