Nginx is an open-source web server, reverse proxy server, and load balancer known for its high performance, scalability, and efficient handling of concurrent connections. Commonly used to serve web content, manage incoming web traffic, and act as a reverse proxy to distribute requests among multiple servers or applications.
Nginx uses an event-driven architecture, which allows it to handle a large number of simultaneous connections efficiently. It's often used to improve web server performance, manage SSL/TLS encryption, serve static content, cache web content, and act as a front-end proxy for various web applications and services. Due to its versatility and performance, Nginx is used in websites and large-scale, high-traffic applications.