A company has established its entire infrastructure on AWS, utilizing Amazon EC2 instances for hosting their e-commerce website and Amazon S3 for storing static data. Three engineers manage cloud administration and development through a single AWS account. Occasionally, one engineer modifies another's EC2 security group configuration, leading to noncompliance issues. A solutions architect needs to implement a system that monitors changes made by the engineers and sends alerts when noncompliant modifications to EC2 security settings occur. What is the quickest method for the solutions architect to fulfill these requirements?