The document discusses deploying Palo Alto VM-Series firewalls. It describes redirecting traffic between security groups to the VM-Series firewalls for inspection. Rules are centrally managed on Panorama and applied by the VM-Series firewalls to enforce security policy. The VM-Series firewall can be deployed before a load balancer to process and secure traffic before it reaches the LB. Deploying the VM-Series firewall using virtual wire or L3 interfaces is suggested, depending on specific needs. Configuration of the VM-Series firewall is referenced on the author's blog.