Nginx (pronounced "engine-x") is a high-performance web server and reverse proxy server. It is known for its stability, rich feature set, simple configuration, and low resource consumption.
Originally developed by Igor Sysoev in 2004, Nginx was designed to solve the C10k problem, which is the challenge of handling 10,000 simultaneous connections. It has since become one of the most widely used web servers in the world.
Nginx can be used as a web server to serve static content, as a load balancer to distribute traffic to multiple backend servers, and as a reverse proxy to handle requests and responses between clients and servers.
Due to its performance and versatility, Nginx is often used by high-traffic websites and enterprise-level applications.