AWS is fed up with tech that wasn’t built for clouds, it has a big blast radius

That's astonishing that Amazon builds its own "switch gears" software, as the article calls it. I assume these are the Automatic Transfer Switches (ATS) that connect to battery power or generator power when there's a main power failure. It may be that they want to go back onto main power using their own criteria for stability.

Oh, a literal blast radius.

This feels like old news. I remember reading about Google making its own network hardware 5+ years ago and putting parts of the data center in shipping containers. When you're operating some of the largest datacenters ever made, you're going to build a lot of your own stuff.