nginx is a web server and reverse proxy software used for serving websites and applications, as well as managing network traffic. It is designed for system administrators, developers, and organizations needing reliable, high-performance server capabilities.

• Reverse Proxy and Load Balancing: Distributes incoming traffic across multiple backend servers to improve reliability and performance.
• HTTP Server: Serves static content like HTML, CSS, and images quickly and efficiently.
• Low Resource Usage: Handles many concurrent connections with minimal memory and CPU consumption.
• Modular Configuration: Uses a straightforward, file-based configuration system for setting up server blocks, SSL, and caching rules.
• Mail Proxy: Can also function as a proxy for IMAP, POP3, and SMTP email protocols.