The image shows an Azure region with two availability zones (1 and 2).

Availability zone 1 contains an customer VNet (IP address: 10.1.0.0/16) containing a delegated client subnet (IP address: 10.1.0.0/24) with Oracle Database@Azure on which Oracle Exadata Database Service resides. Availability zone 2 contains a customer VNet (IP address: 10.2.0.0/16).

The Oracle Exadata Database Service has an Oracle Key Vault multi-node cluster, that contain four app subnets, each with an Oracle Key Vault VM. This multi-node cluster spans across to availability zone 2. Of the four app subnets, the two located in availability zone 1 have IP addresses of: 10.1.1.0/24 and 10.1.2.0/24; and the two located in availiability zone 2 have IP address of: 10.2.1.0/24 and 10.2.2.0/24 respectively.