Domain 4: Identity and Access Management

Domain 4: Identity and Access Management (IAM) is a critical component of the AWS Certified Security – Specialty (SCS-C02) exam, typically accounting for approximately 20% of the total score. This domain focuses on designing, implementing, and managing authentication and authorization mechanisms across AWS environments. **Key Areas Covered:** 1. **AWS IAM Policies and Permissions:** Understanding identity-based policies, resource-based policies, permission boundaries, Service Control Policies (SCPs), and session policies. Candidates must know how policy evaluation logic works, including implicit and explicit deny rules, and how multiple policies interact. 2. **Multi-Account Management:** Leveraging AWS Organizations and SCPs to enforce security guardrails across accounts. This includes cross-account access using IAM roles, AWS Resource Access Manager (RAM), and trust relationships. 3. **Federation and Single Sign-On (SSO):** Implementing identity federation using SAML 2.0, OpenID Connect (OIDC), and AWS IAM Identity Center (formerly AWS SSO). Understanding how to integrate corporate identity providers with AWS for seamless access management. 4. **IAM Roles and Temporary Credentials:** Using AWS Security Token Service (STS) for assuming roles, session tokens, and temporary credential management. This includes EC2 instance roles, Lambda execution roles, and cross-account role assumption. 5. **Amazon Cognito:** Managing user authentication and authorization for web and mobile applications using User Pools and Identity Pools, including social identity provider integration. 6. **Advanced IAM Features:** Implementing least privilege access, analyzing access patterns with IAM Access Analyzer, enforcing MFA, using condition keys in policies, and managing service-linked roles. 7. **Directory Services:** Understanding AWS Directory Service options including AWS Managed Microsoft AD, AD Connector, and Simple AD for integrating on-premises directories. Candidates must demonstrate the ability to troubleshoot access issues, design secure access architectures, implement principle of least privilege, and ensure proper credential management including key rotation and secrets management using AWS Secrets Manager and AWS Systems Manager Parameter Store. Domain 4: Identity and Access Management (IAM) is a critical component of the AWS Certified Security – Specialty (SCS-C02) exam, typically accounting for approximately 20% of the total score. This domain focuses on designing, implementing, and managing authentication and authorization mechanisms ac…