Storage
AWS Mainframe Modernization
- Timebilled
- Bytesbilled
- Callsnot billed
In one line
Closed to new customers since November 2025; existing runtime environments still bill per vCPU-hour.
What gets missed
The runtime meter is per AWS CPU core per hour on a provisioned environment, so an idle developer environment costs what a busy one does. Getting mainframe data across is priced separately per GB and it stings.
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.
BluAgeRuntime-Non-Managed-vCPU-HoursFile-Transfer
Bills the same way
These services turn exactly the same meters, so what you learn here transfers.