Many developers have become familiar with building microservices on traditional compute offerings such as virtual machines and containers, but what about serverless? The "functions as a service" model behind AWS Lambda presents a number of unique differences while still providing many benefits that make it a strong fit for microservicesbased architectures. In this session, we talk about mapping microservicesbased architectures to Lambda's event model. You learn how to think about the bounds of functions and their alignment to the services represented. We then cover patterns that enable rapid development and easier testing. Walk away ready to build your next microservice with AWS Lambda.