In regular mode, the Zoom Meeting Hybrid (ZMH) processes meeting media locally for on-prem users and allows external users to join meetings through the Zoom cloud. In this mode, the ZMH also allows for the consumption of cloud-delivered services such as whiteboard, live streaming, transcription/translation, and recording.
For regular hybrid meetings, ZMH utilizes its Selective Forwarding Unit (SFU) functionality, which relays media locally to internal attendees and enables cloud cascading for overflow and external guest joining. Although a ZMH SFU can redistribute a meeting’s media, it does not handle client-to-cloud signaling connections during regular hybrid meetings. Users connected to a Meetings Hybrid appliance will continue to establish a bandwidth-light signaling connection with the meeting’s cloud server for in-meeting data and operations, like starting a cloud recording or updating the participants list.
In Internal mode, the ZMH provides complete localization of the meeting media and signaling processing, similar to the Meeting Connector (MC) solution. However, unlike the MC, this mode supports access to more cloud services and can be enabled by the admin or the meeting host if granted the privilege. In this mode the ZMH does not allow for cloud media cascading, keeping all media and signaling on-premise. To enable Internal hybrid meetings the ZMH uses a functionality called Internal Multimedia Routing (iMMR).
Internal Mode can be enabled under Enable hybrid services for meeting hosts and participants at the Account or Group level.