Management

Amazon CloudWatch Metrics

Timebilled
Bytesnot billed
Callsbilled

In one line

Basic AWS metrics are free. Detailed monitoring and anything you publish yourself rent monthly.

What gets missed

Billing counts every unique dimension combination as its own metric, so one high-cardinality dimension mints thousands. EC2 detailed monitoring is AWS-published and still billed.

Find it on your bill

Filter Cost Explorer or your Cost and Usage Report by these usage types. A usage type with no region prefix means us-east-1.

CW:MetricMonitorUsage
CW:GMD-Metrics
CW:Requests
CW:MetricStreamUsage

Bills the same way

These services turn exactly the same meters, so what you learn here transfers.