https://mosprotocol.com/mos-faq/
>Media Object Server Communications Protocol allows Newsroom Computer Systems (NCS) and Media Object Servers (MOS) to exchange information using a standard protocol (language and vocabulary). This protocol enables the exchange of the following type of messages:
>Descriptive Data for Media Objects. The MOS “pushes” descriptive information and pointers to the NCS as objects are created, click modified, web or deleted in the MOS. This allows the NCS to be “aware” of the contents of the MOS and enables the NCS to perform searches on and manipulate the data the MOS has sent.
>Playlist Exchange. The NCS can build and transfer playlist information to the MOS. This allows the NCS to control the sequence that media objects are played or presented by the MOS.
Oh shiet, the 4am protocol
>Media Object Server Communications Protocol (MOS): An evolving protocol for communications between Newsroom Computer Systems (NCS) and Media Object Servers (MOS) such as Video Servers, Audio Servers, Still Stores, and Character Generators. This protocol is supported and developed through cooperative collaboration among equipment vendors, software vendors and end users. Our goal is to develop and maintain a common communications protocol which allows integration of diverse NCS and MOS equipment.