Nadeem Lughmani created an excellent solution for the securing your cloud deployment hands-on exercise in our public cloud online course. His Terraform-based solution includes:

• Security groups to restrict access to web server and SSH bastion host;
• An IAM policy and associated user that has read-only access to EC2 and VPC resources (used for monitoring)
• An IAM policy that has full access to as single S3 bucket (used to modify static content hosted on S3)
• An IAM role for AWS CloudWatch logs
• Logging SSH events from the SSH bastion host into CloudWatch logs.