@pluralistic Do you need the lightning-fast globally-local downtime-resilient delivery of a CDN, or are you just trying to remove load from your storage? You may be especially keen on the latter if you're using an expensive cloud S3 provider like those recommended in the replies. In that case, you can save a lot of money by running your own Minio(s) and/or standing up a cheap VPS in front of your storage with nginx media caching. If you do need a CDN, I hear people speak well of Akamai.