WebSocket is a communication protocol that enables real-time, two-way interaction between a client and a server over the internet. Unlike traditional HTTP requests, which require a new connection for each interaction, WebSocket maintains a single, persistent connection. This allows for faster data exchange and is particularly useful for applications like online gaming, chat services, and live notifications. The protocol operates over a standard TCP connection and begins with a handshake process that upgrades the connection from HTTP to WebSocket. Once established, both the client and server can send messages to each other at any time, making it efficient for applications that require instant updates or continuous data flow.