Using External CDN

Anyone have experience using a cdn to deliver media and other files from una install? I have stackpath but have no been able to configure una.io to run from it. Any thoughts? I've found a few links that mention something about a mod for apache for CDN however all links seem to point to a dead download. If there's no option to do this within una itself, perhaps a work around would be to route traffic to the cdn via apache. Any thoughts on this would be well appreciated. Thanks.