
As a minimum, configure the platform management group including its children. Deploy subscriptions for identity, management, and connectivity.
Dedicated subscriptions allow for better control of permissions with PIM.
Create a hub virtual network in the connectivity subscription. [express-route] circuits or [[site-to-site]] VPN connections terminate in the hub virtual network. Consider deploying [virtual-wan] instead of manually creating virtual networks and peerings.
Create virtual networks with small address ranges.
Use [[blueprints]] to deploy infrastructure for applications. Each applications is deployed in it’s dedicated landing zone subscription with a dedicated virtual network that is connected to the hub virtual network with vnet peering.