Template and template stack variables enable you to more easily reuse templates or template stacks by allowing you to replace template configuration objects with a template variable with a value specific to one or more devices. This allows you to reduce the total number of template and template stacks you need to manage while allowing you to keep any device-specific configuration values. You can now use template and template stack variables to replace hostname, IPv4 subnet, IPv6 subnet, and Pre Shared Keys in your managed firewall configurations.