AWS IAM - User, Root User & Groups

👤 IAM Users

• IAM means Identity and Access Management.

• Individual identities for people/services to access AWS.

• IAM is a global service.

• Can have:

  • Programmatic access (CLI, SDK)

  • Console access (via username/password)

• Should NOT use root user—create IAM users instead

• Permissions assigned directly or via groups

👥 IAM Groups

• Collection of IAM users.

• Used to assign permissions to multiple users at once.

• Easier management than assigning policies to users individually.

  • Example: Admin group → has AdministratorAccess → all users in the group inherit it.

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