AWS Certified Cloud Practitioner (CLF-C02) — Question 510

Which AWS service supports user sign-up functionality and authentication to mobile and web applications?

Answer options

• A. Amazon Cognito
• B. AWS Config
• C. Amazon GuardDuty
• D. AWS Systems Manager

Correct answer: A

Explanation

Amazon Cognito provides user sign-up, sign-in, and access control for web and mobile applications, making it the correct choice. AWS Config is used for resource assessment and auditing, Amazon GuardDuty is a threat detection service, and AWS Systems Manager helps manage AWS resources, none of which handle user authentication.