nginx is a widely-used web server and reverse proxy software designed for developers and system administrators who need to serve web content reliably under high traffic conditions. It is known for its event-driven architecture, which allows it to handle many simultaneous connections with minimal memory usage.

• Reverse Proxy and Load Balancing: Acts as an intermediary for other servers, distributing client requests to improve performance and reliability.
• HTTP Caching: Stores frequently requested content to reduce load on backend servers and speed up response times for users.
• SSL/TLS Termination: Manages the encryption and decryption of HTTPS traffic, offloading this computationally intensive task from application servers.
• Static Content Serving: Delivers files like images, CSS, and JavaScript directly and efficiently, often faster than application-level servers.
• Modular Configuration: Uses a flexible, human-readable configuration file system to control server behavior, access rules, and routing.