Mainframe Rehosting on Azure Virtual Machines

Migrating workloads from mainframe environments to the cloud enables you to modernize your infrastructure and often save on costs. Many workloads can be transferred to Azure with only minor code changes, such as updating the names of databases. An Azure virtual machine (VM) is used to isolate and manage the resources for a specific application on a single instance. Mainframes such as IBM z/OS use Logical Partitions (LPARS) for this purpose. A mainframe might use one LPAR for a CICS region with associated COBOL programs, and a separate LPAR for IBM Db2 database. A typical n-tier application on Azure deploys Azure VMs into a virtual network that can be segmented into subnets for each tier.