The full form of GENA is General Event Notification Architecture.

GENA stands for General Event Notification Architecture. GENA Base defines an HTTP notification architecture that transmits notifications between HTTP resources. An HTTP resource could be any object which might need to send or receive a notification, for example a distribution list, buddy list, print job, etc. It was defined in Internet-Draft draft-cohen-gena-p-base-01.txt (now expired).

GENA Base Client to Arbiter provides for the ability to send and receive notifications using HTTP over TCP/IP and administratively scoped unreliable multicast UDP. Provisions are made for the use of intermediary arbiters, called subscription arbiters, which handle routing notifications to their intended destination.