My understanding is that most commercial CDNs (Limelight, Akamai, etc) are also more cost-effective than serving directly from AWS. However, commercial CDNs d

My understanding is that most commercial CDNs (Limelight, Akamai, etc) are also more cost-effective than serving directly from AWS. However, commercial CDNs don't know a-priori what files are going to be popular, and how to distribute them in different regions and on different types of storage to maximize efficiency. But that's one of the things that Netflix's CDN team can predict. See https://medium.com/netflix-techblog/distributing-content-to-open-connect-3e3e391d4dc9 https://medium.com/netflix-techblog/distributing-content-to-...