lw.comm-server is the unified communications server for LaserWeb. It is the gateway between the machnine and the frontend and cares about all different interfaces & firmware specific protocols, so the clients doesn't have to care about the machine controller and firmware (as far as possible).
lw.comm-server is based on nodejs 12.x.
The frontend communicates with the server over websockets. Details about the API can be found in the wiki. The server supports several interfaces to communicate with machines.
Please check the wiki for details about the API.