CDN stands for Content Delivery Network. It’s a network of geographically distributed servers that work together to deliver web content, such as images, videos, scripts, and other assets, to users based on their geographic location. The main purpose of a CDN is to improve the speed, reliability, and performance of websites by reducing the distance between the user and the server delivering the content. This is achieved by caching content on multiple servers strategically placed in various data centers around the world. When a user requests a piece of content, it’s delivered from the nearest server, minimizing latency and load times. CDNs are widely used to enhance the user experience, optimize website performance, and handle traffic spikes effectively.