The high volume of transactions for mainframe applications creates a large volume of data. Azure offers a compelling target for mainframe modernization and data migration. Azure relational and NoSQL databases provide scalability, high availability, and ease of maintenance that meets or exceeds that of mainframe environments. If you want to retire a mainframe workload and retain the data in a low-cost storage, Azure provides options.
https://learn.microsoft.com/en-us/azure/architecture/example-scenario/mainframe/mainframe-data-replication-azure-data-platform
