Granted, this is from 2018, but Chris is talking about how much they doing everything, and talking about how they like AWS' elasticity for their game servers because their load is pretty dynamic, and that they're running games in 26 availability zones.
which can be confusing
in a lot of games you cannot see a server list anymore, you can only use matchmaking (usually casual / ranked) and the matchmaking handles spinning up servers depending on the load.
It's similar to the distinction Netflix uses between their control plane (hosted on AWS) and their content-delivery (hosted on their 'Open Connect' CDN).
I might have expressed myself badly in my previous comment, I simply wanted to say that I've seen a lot of people saying "matchmaking" for "game servers" these days because it is very common and dedicated servers are no longer the norm (sadly).