Have you ever heard about Peloton? It is a fitness equipment and media company from New York. They created their stationary bicycle and treadmill, which users buy to install at their homes. Then customers use monthly subscriptions to participate in live video fitness classes. Peloton is super popular, and they even got a shortage of equipment. The main idea of Peloton is that you jump on your bike or treadmill whenever you want, right at your home, then you select live or pre-recorded fitness class and do your workout. While running or spinning the wheels,your attention is on a screen that goes with the device, professional fitness coaches run the show, so you feel highly engaged. Pandemic became an accelerator for Peloton and the company shows outstanding financial results, they double their revenue 4 years in a row! Ⓒ Statista In this article, I will explain how the Peloton video streaming system works and what infrastructure costs does Peloton spend. When you select a workout in Peloton, you have two options. To watch a prerecorded class or participate in the live event. In both options, Peloton delivers video via HLS or MPEG-DASH, through the popular content delivery network CDN’s. It is the same way like Netflix or Twitch deliver video. In one of the Peloton job descriptions, Akamai, Cloudfront, and Cloudflare were mentioned. Meaning they have a real-time video delay somewhere around from 5 to 20 seconds. Back in April 2020, Peloton set a record and attracted 23.000 users to one live class. This is a huge number for a single fitness class, but from a technology perspective, that’s not a that big a problem. Especially if you compare that to millions of simultaneous viewers on Netflix.