In this presentation we will discuss our learnings in incorporating Apple’s Low Latency-HLS into the delivery workflows we run for global live sports events. The talk will cover the challenges we faced, the choices we made, and our end-to-end solution for including Low Latency-HLS in our live event streaming service. We will discuss the challenges of building a brand new delivery specification, that’s still influx, into a high-availability, fully featured service that is accessed by millions of subscribers who expect the very best live streaming experience. The talk will include: -Using CMAF for ingest – what is the state of support in the transcoders we tested -Handling partial fragments -Playlist deltas -Adding in server side ad insertion, closed captions, multi-track audio, and regionalisation -Challenges with player compatibility, working with beta releases and player feature roll-out and supporting app store releases -Testing approach – lab testing and live trials -Addressing user expectations – what are the major QOE issues – and what was the user feedback -Dual stream support with and without low latency -Multiple manifests and supporting legacy players – how and where to manage manifest state – and how the players behave -Serving streams using HTTP 2.0 push -Multiple CDN support and integration -Blocking manifest reloads -And finally how fast is it – the minimum latency have we achieved Presented at Demuxed 2019 in San Francisco.