Curious what the impact of an outage of a major cloud provider would be?
Cloudburst an open-source is a tool that simulates (public) cloud outages by blocking interactions with selected cloud operators. It enables you to test what-if scenarios and to assess the extent to which your services rely on cloud services and can cope with cloud outages.
More info: https://www.sidnlabs.nl/en/news-and-blogs/simulating-cloud-provider-downtime-with-cloudburst
Source code: https://github.com/SIDN/cloudburst