Hello Will,

Jistsi Meet is the video conferencing software. In order to live stream or to record a conference, the Jistsi team has created "jibri" that stands for "JItsi BRoadcasting Infrastructure" for that. "Jibri" has to be installed on an other server (or VM) and basically it will work as an invisible participant to your Jitsi conference. It will give the possibility to either record (and save the recording on your server, nextcloud, ...) or create a stream you can connect to a youtube live session for example.
The meet.jit.si example includes both the video conferencing and jibri (the "JItsi BRoadcasting Infrastructure") parts.