IAM (Identity and Access Management) is an AWS security service used to control who can access AWS resources and what actions they can perform. It helps protect cloud resources by managing permissions.
With IAM, you can create users, groups, roles, and policies to give the right level of access. It also supports Multi-Factor Authentication (MFA) for stronger account security.
In simple words, IAM controls who can sign in to AWS and what they are allowed to do, keeping your cloud environment secure.