AWS IAM
AWS Identity and Access Management (IAM) is a web service that helps securely control access to AWS resources. It enables you to manage users, groups, roles, and permissions to define who can access what within your AWS environment. IAM provides fine-grained access control and integrates with other AWS services for centralized security management.
Developers should learn AWS IAM when building or managing applications on AWS to implement security best practices, such as the principle of least privilege, and to comply with regulatory requirements. It is essential for scenarios like multi-tenant applications, automated deployments with CI/CD pipelines, and managing access for teams in enterprise environments to prevent unauthorized resource usage.