Represents the type for a monetizable resource(any entity on which billing
happens). For example, this could be MINUTES for Google Voice and GB for
Google Drive. One SKU can map to multiple monetizable resources.
For IaaS SKUs like Google Cloud Platform, monetization is based on usage
accrued on your billing account irrespective of the type of monetizable
resource. This enum represents an aggregated resource/container for all
usage SKUs on a billing account. Currently, only applicable to Google Cloud
Active licensed users(for Voice SKUs).
Monthly active user.
For Google Cloud Platform subscriptions like Anthos or SAP.