WebSocket is a communication protocol that enables persistent, two-way connections between a client (such as a web browser) and a server. Unlike traditional HTTP requests, which require a new connection for each exchange, WebSocket establishes a single, long-lived connection that allows data to be sent and received in real time. This makes it ideal for applications that require instant updates, such as chat platforms, online gaming, and live data feeds. WebSocket operates over TCP and is supported by most modern web browsers, providing a more efficient and interactive user experience compared to standard HTTP communication.