From your point of view, setup works much the same as any other CDN, you get the same detailed reports as you'd see anywhere else, but your site just gets access to many more network resources.
This is very similar to how HTTP caching works, too. In short, even if your webshop is backed by a CDN, your server will need to serve those 1,000,007 URLs at least once. Only after that initial ...
When a user requests one of the hosted files, the CDN works out where the nearest server is physically located and sends the request there instead of potentially the other side of the world. A WAF ...