AWS service used for centralized user management and authentication

Question:
Which AWS service is used for centralized user management and authentication?

1. AWS Cognito
2. AWS IAM
3. AWS Single Sign-On (SSO)
4. AWS Directory Service

Answer:
B - is the correct answer. AWS Identity and Access Management (IAM) is a service that enables you to manage users, groups, and permissions to securely control access to AWS resources. It provides centralized user management and authentication for your AWS environment.