P2P stands for Peer-to-Peer. It commonly refers to a decentralized model or network where two or more parties interact directly with each other without the need for a central intermediary. For example, in P2P services or networks, users can share files, transfer money, or exchange resources directly with one another. This is in contrast to traditional client-server models where a central server manages communication or transactions. In different contexts, P2P can mean:

• Peer-to-peer networking: computers acting as both clients and servers to share data without relying on a central server.
• Peer-to-peer payment systems: individuals sending money directly to each other without intermediaries such as banks.

The core idea is direct interaction and resource sharing between participants or "peers" equally.