Peer-to-peer Networks

In a peer-to-peer network, each computer can directly access the hardware and software resources of other computers on the network. Each computer can be a client and a server simultaneously. A peer-to-peer network supports unstructured access to network resources. Each network computer is a peer to all other computers on that network, that is, there is no hierarchy in the network.

A client is a computer that uses network services.
A server is a computer that provides network services.