The Chaos Toolkit is one of a number of Chaos Engineering tools that made this edition of the Radar. You use the toolkit to describe and then run repeatable experiments on your infrastructure to understand its resilience in the event of failure. Many of our teams have been using homegrown tools to do this, so it's great to see an open-source project dedicated to the practice. The toolkit already has drivers for AWS, Azure Service Fabric and GCE (among others) and plays nicely with build tools which lets you experiment with automation. The usual caveats apply though, Chaos Engineering is a very powerful technique that is best used on resilience-aware systems, that is, systems that have been built to cope with failure. For that reason, we recommend starting using Chaos Toolkit in your nonproduction environments first.