This document discusses modern application architectures on AWS. It covers key concepts like containers, serverless computing using AWS Lambda, and managed Kubernetes with Amazon EKS. Specific services are highlighted, like Amazon ECS for container orchestration and Amazon Fargate for serverless containers without managing infrastructure. Case studies are presented on companies like FINRA and McDonald's using these architectures on AWS for speed, scale, and cost efficiency. The principles of cloud native applications are also summarized, focusing on pay-as-you-go models, self-service, elasticity, and other advantages over traditional data center architectures.