The correct answer is **B. AWS Identity and Access Management (IAM)**. AWS IAM is always available free of charge to users¹². It allows you to securely manage access to AWS services and resources for your users.
(1) Get started with the AWS Free Tier - How AWS Pricing Works. https://docs.aws.amazon.com/whitepapers/latest/how-aws-pricing-works/get-started-with-the-aws-free-tier.html.
(2) Did You Know About AWS Always-Free Services - DEV Community. https://dev.to/aws-builders/did-you-know-about-aws-always-free-services-3lgk.
(3) Trying services using AWS Free Tier. https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/billing-free-tier.html.
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Yak_Yeti
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