I had a similar situation, but in my case was due to a an upstream outage in a AWS Region. The final assessment in the Incident Review was that we should have

I had a similar situation, but in my case was due to a an upstream outage in a AWS Region. The final assessment in the Incident Review was that we should have a multi-cloud strategy. Our luck that we had a very reasonable CTO that prevented the team do to that. He said something along the lines that he would not spend 3/4 of a million plus 40% of our engineering time to cover something that rarely happens.