HLS: HTTP Live Streaming

[gomera]

Since its introduction in 2009, HTTP Live Streaming (HLS) has enabled the delivery of countless live and on‐demand audio and video streams globally. With the introduction of a new Low-Latency mode, latencies of less than two seconds are now achievable over public networks at scale, while still offering backwards compatibility to existing clients. Learn about how to develop and configure your content delivery systems to take advantage of this new technology.

https://developer.apple.com/videos/play/wwdc2019/502/

And the newest changes (a 5' video):
https://developer.apple.com/videos/play/wwdc2020/10228/