AWS Security Practices for S3 and IAM: Developer Edition

Building applications in the cloud requires a security-first mindset, yet configuring permissions and data storage safely is often a major hurdle for developers. This text-based course guides you through the foundational security mechanisms of AWS, focusing on Identity and Access Management (IAM) and Simple Storage Service (S3). You will learn how to transition from default, permissive settings to a robust, least-privilege security posture. By reading through clear explanations and structured scenarios, you will develop the practical skills needed to secure cloud resources, protect sensitive data, and align with modern Zero Trust principles. What you'll learn: Understand foundational AWS security concepts, including the shared responsibility model and identity federation; Configure IAM policies, roles, and trust relationships using least-privilege principles and attribute-based access control (ABAC); Enforce encryption at rest and in transit for S3 buckets using AWS Key Management Service (KMS); Secure application secrets and database credentials using AWS Secrets Manager; Implement SAML-based single sign-on (SSO) and federated identity integration; Monitor resource access and detect anomalies using CloudTrail and IAM Access Analyzer. The course begins with core security definitions and IAM structures before progressing to practical configuration scenarios for S3 bucket policies, encryption standards, and automated access monitoring. This course is designed for beginner developers and cloud enthusiasts who want to build secure applications on AWS, with no prior cloud security experience required. Start reading today to build secure-by-default cloud applications.