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1. IAM (Identity and Access Management)

Principles of least privilege, Roles, and Policies.

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IAM governs AWS authorization: - Users / Groups: Human credentials. - Roles: Temporary credentials assumed by AWS services (EC2, Lambda) or federated users without hardcoded API keys. - Policies: JSON documents defining `Effect`, `Action`, and `Resource`.

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Check your understanding

1. What is the recommended method for granting an EC2 instance or Lambda function access to AWS S3?
Assign an IAM Role to the instance/functionHardcode AWS access keys in source codeMake the S3 bucket publicUse root credentials

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