AWS Identity and Access Management (IAM) is an AWS service that helps an administrator securely control access to AWS resources. Administrators in IAM control who can be authenticated (signed in) and authorized (have permissions) to use AWS resources. By using IAM, you create principals, such as roles, users, and groups in your AWS account. You control the permissions that those principals have to perform tasks using AWS resources. You can use IAM for no additional charge. For more information about managing and creating custom IAM policies, see Managing IAM policies in the IAM User Guide.
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