Content Delivery Networks (CDNs) consist of numerous points-of-presence (POPs) in Internet-connected datacenters around the world. CDNs help improve video streaming performance, reliability, and reduce vendor lock-in by distributing traffic across multiple CDN POPs in the area. Mux Video automatically leverages multiple CDNs to deliver the best network performance and viewing experience. It uses Cedexis OpenMix for dynamic CDN selection based on viewer's IP address and supports signed URLs as a way of restricting access to all types of content.