As the article explains, latency and clock sync go hand in hand. Here's a blog post [1] that goes further into clock sync, contrasting NTP and hardware-based systems. The company behind the blog post says that their solution is available as a managed service on Azure and GCP, but I've never looked out for it.

[1] https://www.ticktocknetworks.com/tick-tock-the-clock-runs-wi...