CDN stands for Content Delivery Network. The Content Distribution Network (CDN) is an infrastructure of servers distributed around the world, and the goal of the CDN is to deliver the site content to visitors in the fastest and most secure way.

For example;
Assume that most of your visitors are in the United States and your servers are in Turkey.
Naturally, Turkey – will slow data exchange between the United States, and your site will open slow.
CDN services here comes into play, and with our worldwide servers your customers in the United States will open your site from our server in the USA, that will result in your site opening 3 times faster.