CDN

CDN or Content Delivery Network. In the web hosting world, it’s vital to choose servers close to your target market so that your website will load quickly for these visitors. If your customer base is in Asia but your server is in California, it will take longer for data to be transferred from your server.
But if you have a global target market, it’s impossible to choose a server that’s close to all of your website visitors. A CDN helps with this.
The term refers to a group of servers spread all over the world. It doesn’t host all of your web site’s content, but it uses caching to ensure that as much of your website data as possible is transferred from the closest possible server to your visitors. This ultimately means your website will load faster.