Architectures for Multi-CDN Switching

In this talk, we will report the results of study conducted by SVTA Players and Playback SG on architectures for multi-CDN switching. Specifically, we will review different architectures and solutions for CDN switching that have been submitted in this work, including: client-based dynamic CDN load balancer solution, server-side solution based on HLS/DASH content steering, and edge-based implementation of HLS/DASH content steering methods. We will describe cons and pros of such different architectures and report preliminary results of performance study of these solutions considering standards set of QOS/QOE performance metrics for streaming (observed throughput, start-up time, buffering events, buffer ratio, etc.). We will conclude with a survey of current state of deployments of HLS/DASH content steering and alternative solutions across different platforms, and available open-source implementations.