Amazon CloudFront adds eight additional real-time metrics in Amazon CloudWatch
Amazon CloudFront now offers eight additional real-time metrics in Amazon CloudWatch. These new metrics provide you even more visibility into the performance of your CloudFront traffic. You can use CloudFront’s real-time metrics to monitor, alarm, and receive notifications on the operational performance of your CloudFront distributions. CloudFront already provides six operational metrics, and four [email protected] function metrics, to all CloudFront customers at no additional cost.
Source:: Amazon AWS