How did you choose which datacenters to include? For example, eu-south-2 (Spain) is missing.

The reason I know is because I worked on a project that required latency to be under 30ms between datacenters, and we had to use eu-west-1 (Ireland) and eu-south-2.

Turns out that latency is closer to 42ms, mainly because there are no undersea cables between Ireland and the continent (they only go to England, then they have to route across England to get to a cable to the content).