AWS cloud-native services enable organizations to build scalable and resilient applications in today's transformed application development landscape. AWS has pioneered technologies that have become cornerstones of modern application architecture, offering comprehensive tools for implementing sophisticated solutions. The document examines serverless computing paradigms through AWS Lambda and API Gateway, highlighting their evolution, features, and best practices for implementation. It delves into container orchestration with Amazon ECS and EKS, comparing their capabilities and introducing Fargate as a serverless container execution option. Purpose-built database services including DynamoDB, Aurora Serverless, and ElastiCache are discussed alongside storage solutions like S3, EFS, and FSx, with emphasis on appropriate data access patterns and optimization techniques. Infrastructure automation through CloudFormation and CDK is explored, alongside continuous integration and deployment pipelines that form the foundation of modern software development practices. The examination of observability and monitoring tools essential for operating cloud-native systems effectively provides a comprehensive guide to leveraging AWS services for scalable application architectures