Since the latest release of Palo Alto Network PAN-OS 9.0.0 the VM-Series firewall now supports the VM-Series plugin, a built-in-plugin architecture for integration with public clouds or private cloud hypervisors, with the plugin you can now configure VM-Series firewalls with active/passive high availability (HA) in Azure. I will cover some of the requirements in short which is needed to setup HA in Azure.