Which tool can validate that a virtual network's firewall configuration meets corporate standards?

Azure Policy is the correct tool because it allows you to define, assign, and manage standards for resources, including network configurations. You can create policies that enforce specific firewall rules, network security group (NSG) configurations, or other network settings to ensure compliance with corporate standards. Azure Advisor provides recommendations for optimizing resources, but doesn't enforce standards. Azure Resource Health reports on the health and availability of Azure resources, not their compliance with policies. Azure Monitor collects and analyzes telemetry data from Azure resources, which is useful for performance and operational insights, but not for validating configuration against standards.