You can now inject random Amazon EC2 Spot Instance interruptions into your Spot Fleets directly from the Amazon EC2 console. In 2022, we launched the ability for you to use AWS Fault Injection Simulator (AWS FIS) in the Amazon EC2 console to simulate what happens when Amazon EC2 reclaims a single EC2 Spot Instance. Now, we have enhanced this capability so you can introduce interruptions in a randomly selected set of instances of a Spot Fleet with just a couple of clicks. This makes it easy to test if your Spot Fleet-based application is resilient against the random nature of Spot Interruptions.
Source:: Amazon AWS