If AWS Lambda scales automatically, what is left for us architects to do except putting my feet up?” Oh, so much my friend. Everything fails, all the time System failures are more common than we might expect, and us architects and developers need to prepare for this. However, in a Severless world, it can be a little different. In this talk, we cover how using AWS serverless services, you can build resilient systems, including how to build using resilient Serverless design patterns, how to validate it and test it using Chaos Engineering.