[dilippkumar]

AFAIK there isn't a modern word to describe the common architecture that you describe.

About a decade ago, the phrase "hub-and-spokes network" was thrown around to describe an architecture with a central server that acted as the mediator. The term "p2p" became popular in this context. (

Napster, bittorrent, tox are all "p2p" because they don't connect to single server. Skype is not "p2p" because all packets go through the skype servers.

[sliken]

Skype used to be p2p, except for the original auth/login. But since then microsoft bought the company and push everything through their servers.