Introduction AWS security starts with one fundamental service: Identity and Access Management (IAM). Whether you’re working with Amazon S3, EC2, Lambda, or API Gateway, IAM policies determine: Who can access AWS resources What actions they can perform Which resources they can access Under what conditions access is granted For many beginners, IAM policies look intimidating because of their JSON format. However, once you understand the building blocks, writing and troubleshooting IAM policies becomes much easier. In this guide, we’ll learn AWS IAM policies using practical examples. What is an AWS IAM Policy? An IAM policy is a JSON document that
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