Server-Sent Events (SSE) is a technology that allows a server to send real-time updates to a web browser over a single HTTP connection. This is useful for applications that need to display live data, such as news feeds or stock prices. Unlike traditional methods, SSE automatically reconnects if the connection is lost, ensuring a continuous flow of information. SSE works by using a special type of HTTP response that keeps the connection open. The server sends updates in a text format, which the browser can easily process. This makes it simpler to implement compared to other real-time communication methods like WebSockets.