What should a solutions architect do to meet these requirements?
Use Amazon Macie to automatically discover, classify and protect the EC2 instances.
Use Amazon GuardDuty to publish Amazon Simple Notification Service (Amazon SNS) notifications.
Use Amazon Inspector with Amazon CloudWatch to publish Amazon Simple Notification Service (Amazon SNS) notifications
Use Amazon EventBridge (Amazon CloudWatch Events) to detect and react to changes in the status of AWS Trusted Advisor checks.
Explanations:
Amazon Macie is designed primarily for data security and privacy, focusing on discovering and classifying sensitive data in S3 buckets, not specifically for assessing the security of EC2 instances. It does not validate compliance standards for EC2 security.
Amazon GuardDuty is a threat detection service that monitors AWS accounts and workloads for malicious activity. While it can publish notifications via Amazon SNS, it does not directly automate security assessments or validate compliance throughout the development process.
Amazon Inspector is an automated security assessment service that helps improve the security and compliance of applications deployed on Amazon EC2. It can assess EC2 instances against best practices and standards, and it can be integrated with Amazon CloudWatch to publish SNS notifications for findings, making it suitable for continuous monitoring and compliance demonstration.
Amazon EventBridge can monitor events and changes across AWS services, but it is not specifically designed for security assessments of EC2 instances or compliance validation. AWS Trusted Advisor provides best practice checks, but using EventBridge for this purpose does not directly assess security or compliance in the context of EC2 instances.
From my point of view, the answer is:
Use Amazon Inspector with Amazon CloudWatch to publish Amazon Simple Notification Service (Amazon SNS) notifications