You need to deploy an Azure virtual WAN with three secured virtual hubs in East US, West US, and North Europe and ensure security rules synchronize across regions. Which service should you use?

Azure Firewall Manager is the correct choice because it provides centralized security policy and route management for Azure Firewall instances across multiple virtual networks and subscriptions. This allows you to deploy and manage secured virtual hubs in different regions (East US, West US, North Europe) and ensure consistent security rules are synchronized across them. Azure Virtual Network Manager is used for managing network groups and connectivity across multiple virtual networks, but it doesn't provide centralized firewall policy management. Azure Front Door is a global, scalable entry-point that uses the Microsoft global edge network to create fast, secure, and widely scalable web applications, not for managing distributed firewall policies. Azure Network Function Manager is for deploying network functions (like SD-WAN or firewalls) as a service, but it doesn't offer the centralized security policy synchronization needed for this scenario.