Verizon Digital Media Services (VDMS) is Verizon's enterprise digital media brand integrating EdgeCast CDN, streaming acceleration, and WAF/DDoS security. In 2022 it was sold with Verizon's media business to Apollo Global Management and merged with Limelight Networks to form Edgio.
Comcast CDN is the content delivery network of Comcast, running directly on Comcast's ISP backbone to deliver high-performance CDN acceleration for video, streaming, and large content providers.
Lumen Technologies (formerly CenturyLink / Level 3) operates one of the world's largest Tier 1 fiber backbones from Monroe, Louisiana. Its CDN deeply integrates owned backbone advantages, offering enterprise-grade global CDN acceleration, edge computing, and integrated security.