Which AWS service should be used to monitor Amazon EC2 instances for CPU and network utilization?

Explanations:

Amazon Inspector is primarily used for security assessments and vulnerability management, not monitoring.

AWS CloudTrail is used for logging and monitoring API calls within your AWS account, not specifically for EC2 resource utilization.

Amazon CloudWatch is designed for monitoring AWS resources, including EC2 instances, providing metrics for CPU and network utilization.

AWS Config is used for resource configuration tracking and compliance, not for real-time monitoring of resource performance.