The image shows an OCI Region with a Network Compartment containing a VCN and an Application Compartment containing an Application Subnet.

The Network Compartment: VCN contains a LB Subnet with a Load Balancer (L4 or L7) connected to the two Virtual Machine (Apache) in the Application Compartment: Application Subnet.

The Application Compartment: Application Subnet contains one Virtual Machine (Batch) and two Virtual Machine (Apache) connected to a File Storage (Mount) which is then connected to an App Filesystem (NFS).