HOW AMAZON STREAMS LIVE VIDEO TO TENS OF MILLIONS OF PEOPLE

Summary from the TLDR Web Dev newsletter

Amazon Prime Video uses a variety of AWS services, including Elemental MediaConnect, MediaLive, and CloudFront, to ingest, encode, package, and deliver video content to millions of users. It also employs redundancy measures and parallelization to ensure that its system is resilient to failures. By doing so, it is able to achieve an expected uptime of 99.999%.