- The network is distributed across the world and would be configured to reach a server closer to you.
- More websites would be likely to reference the same file and would not need to download itself again ...
- The CDNs are designed to handle larger traffic than yours
Those are the ones that pop off the top of my head.
At my company, we decided to use CDNs for our internal intranet website. I just don't understand it. The server would be locally hosted. The files are small. We needed to white-list our files to get through the firewall. The thin-client that they log into would not be accessing any external websites.
