A Content Delivery Network (CDN) is a system of distributed servers that deliver web content to users based on their geographic location. The goal of a CDN is to improve website performance by reducing the distance that data has to travel and by distributing the load of serving content across multiple servers.
A CDN works by copying the static content of a website, such as images, videos, and CSS files, to multiple servers located in different geographic locations. When a user visits the website, the CDN will serve the content from the server closest to the user, reducing the time it takes for the content to load.
Using a CDN can significantly improve the speed of a website, especially for visitors who are far from the main server. It can also reduce the load on the main server and improve the reliability of the website, making it faster and more responsive for all users.