What is the FASTEST way for the solutions architect to meet these requirements?
Set up AWS Organizations for the company. Apply SCPs to govern and track noncompliant security group changes that are made to the AWS account.
Enable AWS CloudTrail to capture the changes to EC2 security groups. Enable Amazon CloudWatch rules to provide alerts when noncompliant security settings are detected.
Enable SCPs on the AWS account to provide alerts when noncompliant security group changes are made to the environment.
Enable AWS Config on the EC2 security groups to track any noncompliant changes. Send the changes as alerts through an Amazon Simple Notification Service (Amazon SNS) topic.
Explanations:
AWS Organizations and SCPs (Service Control Policies) are designed to restrict actions across AWS accounts but do not track or send alerts for specific changes in security group settings. SCPs cannot be configured to monitor or alert on configuration changes in security settings.
AWS CloudTrail tracks changes to AWS resources, including security groups, and CloudWatch can generate alerts. However, it does not directly evaluate compliance or detect noncompliant configurations. Additional manual setup would be required for compliance checks, which is not the fastest way.
SCPs are intended to restrict permissions, not to monitor or send alerts for specific changes in resources like security groups. They do not track detailed configuration changes or provide notifications on noncompliance.
AWS Config can monitor and evaluate security group configurations for compliance and can automatically send alerts through Amazon SNS when noncompliant changes are detected. This is the fastest way to track and alert on noncompliant security group changes.