A company is using AWS Control Tower to manage AWS accounts in an organization in AWS Organizations. The company has an OU that contains accounts. The company must prevent any new or existing Amazon EC2 instances in the OU's accounts from gaining a public IP address.
Which solution will meet these requirements?

A. configure all instances in each account in the OU to use AWS Systems Manager. Use a Systems Manager Automation runbook to prevent public IP addresses from being attached to the instances.

B. Implement the AWS Control Tower proactive control to check whether instances in the OU's accounts have a public IP address. Set the AssociatePublicIpAddress property to False. Attach the proactive control to the OU.

C. Create an SCP that prevents the launch of instances that have a public IP address. Additionally, configure the SCP to prevent the attachment of a public IP address to existing instances. Attach the SCP to the OU.

D. Create an AWS config custom rule that detects instances that have a public IP address. configure a remediation action that uses an AWS Lambda function to detach the public IP addresses from the instances.




 
Correct Answer: C

This question is in SAP-C02 exam
For getting AWS Certified Solutions Architect Professional Certificate