What is CDN?

Content Delivery Network, or CDN, is a network of distributed servers that provide web content to end-users.

CDNs use multiple servers across different locations worldwide to improve the speed at which content is delivered to local users.

They also help to offload traffic from the origin server of the content provider.

The content requests are automatically routed to the closest servers, which speeds up the loading of pages and maximises bandwidth.

How is this decision made?