By what system can your displays communicate with the main control center? After all, should they somehow be configured through a single source network?
We decided to create a variable protocol, which allows either realtime communication, but also "delayed" communication to control the display fleet. Instead of the displays communicating directly with the backend, they communicate with Command & Control Centers, which get placed - similar to CDN's - close to the displays. The Command & Control Centers itself will be connected to major backbones and synchronize their content with the main backend.