IAM
Identity and Access Management
Controls who is authenticated in an AWS account and what they are authorized to do. Permissions are granted through policies attached to users, groups, and roles.
Don’t confuse it with
IAM governs identities that operate the AWS account. Amazon Cognito governs an application's own end users.
Tested in AWS Certified Cloud Practitioner (CLF-C02), under Security and Compliance — 30% of the exam.
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