Many large-scale communication companies have made the transition to server-client methods of networking vast number of users. There have been a wide number of different solutions that work in many ways, but they are all built on the principal of using servers as nodes in the network instead of clients. These MCUs give networks better stability, performance, and a better overall user experience at the cost of being expensive.

The type of network that uses a MCU works similar to a star network mesh, where a server is the host machine instead of any single user. This allows the call to be controlled from a central location that has high availability and stability. It also allows the developers of the application to scale the bandwidth of the network, keeping in mind the needs of the user base:

This also gives the network a lot of control over how the users connect and interact with each other. This is a fine-grain control of the user experience. The following...