Serverless architectures are changing the way software systems are being built and operated. When compared with systems that use physical servers or virtual machines, many tools, techniques, and patterns remain the same; however, there are several things that can or need to change drastically. To fully capitalize on the benefits of serverless systems, tools, patterns, and best practices should be thought through carefully before embarking on a serverless journey.

This book introduces and describes reusable patterns applicable to almost any type of serverless application, whether it be web systems, data processing, big data, or Internet of Things. You will learn, by example and explanation, about various patterns within a serverless context, such as RESTful APIs, GraphQL, proxy, fan-out, messaging, lambda architecture, and MapReduce, as well as when to use these patterns to make your applications scalable, performant, and fault tolerant. This book will take you through techniques for Continuous Integration and Continuous Deployment as well as designs for testing, securing, and scaling your serverless applications. Learning and applying these patterns will speed up your development lifecycle, while also improving the overall application architecture when building on top of your serverless platform of choice.