Description

For the past 20 years, CDNs have dominated the content delivery space when it comes to delivering video on the Internet. Third-party CDNs focus on layers 4-7 in the OSI stack which includes things such as caching and TCP protocol optimization. For ultra-low latency applications, layers 4-7 do not help, which is why many CDNs are looking at other technologies to assist them with delivering video with only a few hundred milliseconds of delay. For the delivery of real-time applications, there is a debate as to whether a private core with optimal routing on layers 2-3 is needed to truly succeed with low-latency delivery.