I recall reading an article, years ago, how stack overflow is ran off of the equivalent of like two on-prem servers that could take the load way better and far more cheaply than an "enterprise cloud architecture" could. I thought it was an amazing example of how expensive it is to be in the cloud. I didn't think about the high availability benefits of the cloud... Think they still run off of a few servers or did they…
Ive seen entire regions go down in AWS, Google, and Azure. I remember a single developer pushed some code and crashed all of Googles DNS a few years ago.
Cloud is not all wine and roses but I still love it.