> I find it interesting how they achieve this

There are lots of things, but one valuable thing is to build strong social connections [1] and trust [2] with your remote colleagues. For example by regularly getting the team together on video calls to discuss topics unrelated to work. And sharing a meal at the same time. Small things that make a surprisingly big difference.

[1] Guide to Remote Teams https://teamsuccess.io/remoteteam

[2] Harvard Business Review, The Neuroscience of Trust https://hbr.org/2017/01/the-neuroscience-of-trust