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For AWS instance sizing by metric ingestion rate, see the Controller Sizing table.
The actual metrics generated can vary greatly depending on the nature of the application and the AppDynamics configuration. Be sure to validate your sizing against the metric ingestion rate before deploying to production.
For AWS, provision an ENI for each Controller host and link the license to the MAC address of the ENI. For more information about ENI, see the AWS documentation at the following link: