As you begin on your expedition into the world of serverless computing on Amazon Web Services (AWS), it is crucial to have a solid understanding of the fundamental concepts that underpin this powerful platform. In this chapter, you will delve into the fundamentals of cloud computing, explore the AWS architecture and services, and unravel the intricacies of regions, availability zones, and identity management. You will then dive into the world of infrastructure as code (IaC) by examining CloudFormation and the Cloud Development Kit (CDK), which enable us to create, manage, and provision your resources efficiently. To ensure the health and performance of your applications, you will introduce CloudWatch, AWS's comprehensive monitoring and observability service. Finally, you will explore the essential networking concepts within AWS, including Virtual Private Cloud (VPC), Internet Gateways, subnets, and NAT Gateways, which provide the foundation for secure and scalable networking in the cloud. At the conclusion of this chapter, you will have a deep knowledge of the core components and services that form the backbone of serverless computing on AWS, empowering you to build robust and scalable applications that harness the power of the cloud.