P2P, or peer-to-peer, is a decentralized network model where participants, or "peers," share resources directly with each other without needing a central server. This approach allows users to connect and exchange data, files, or services directly, making it efficient and often faster than traditional client-server models. In a P2P network, each peer acts as both a client and a server, contributing to the network's overall functionality. This system is commonly used in applications like file sharing (e.g., BitTorrent) and cryptocurrencies (e.g., Bitcoin), where users can transact or share information securely and anonymously.