Peer-to-peer, aka P2P, is an internet system with a decentralized server which exchanges information based on peers. It has the ability to decrease the nodes in network transmission and lower the risk of missing information. Different to central network system with a centralized server, each user in a peer-to-peer network is a node with the function of a server. Any node cannot directly locate another node. Information has to be exchanged based on its peers.
Peer-to-peer network aims to provide every user with resources including bandwidth, storage and computing ability.