P2P
In a Peer-to-Peer network, “peers” are computer systems connected to each other via the Internet. Files can be shared directly across systems on the network without the need for a central server. In other words, each computer on a P2P network becomes a file server as well as a client. The revolution brought about by Satoshi Nakamoto in 2009 was to make it possible to exchange valuable goods on a P2P network.