How to Identify the Source of CW:GMD-Metrics Costs in CloudWatch?

Question

I noticed charges related to CW:GMD-Metrics in my AWS billing, but I’m struggling to identify their origin.
* CloudTrail is configured to log all API calls, but I don’t see any GetMetricData events.
* Cost Explorer only displays the charge category as CW:GMD-Metrics, but it does not provide details on which metrics or services are generating these costs.
How can I determine the specific metrics, namespaces, or AWS services responsible for these charges? Are there any reports, logs, or queries I can use to trace this back to its source?

Any guidance would be appreciated!

Riku_Kobayashi · Accepted Answer

Hello.

GMD-Metrics is a fee for acquiring metrics data.  
In the past, I have experienced a large amount of these charges on AWS accounts that have installed Datadog or New Relic.  
Do you have any external monitoring services installed in your AWS account?  
https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch_billing.html

By the way, if you record data events, you can check GetMetricData from the CloudTrail logs.  
I think the logs are output to S3 configured for the trail.  
https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/logging_cw_api_calls.html#CloudWatch-data-plane-events

How to Identify the Source of CW:GMD-Metrics Costs in CloudWatch?

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