nginx is a popular open-source software used as a web server, reverse proxy, and load balancer. It is designed for system administrators and developers who need a high-performance, resource-efficient solution for delivering web content and managing network traffic. Its event-driven architecture makes it particularly effective in environments with many simultaneous connections.

• High-performance HTTP server: Acts as a primary web server to serve static content like HTML, CSS, and images with minimal memory and CPU usage.
• Reverse proxy capabilities: Can be configured to forward client requests to other backend servers (like application servers), providing an additional layer of control, security, and abstraction.
• Load balancing: Distributes incoming network traffic across multiple backend servers to improve responsiveness, maximize throughput, and ensure application availability.
• Caching: Improves performance by storing copies of frequently accessed content, reducing the load on backend servers and speeding up response times for users.
• SSL/TLS termination: Handles the decryption of HTTPS traffic, offloading this computationally intensive task from application servers to simplify their configuration and improve efficiency.