Azure Firewall is a cloud-native and intelligent network firewall security service that provides the best of breed threat protection for your cloud workloads running in Azure. It's a fully stateful, firewall as a service with built-in high availability and unrestricted cloud scalability. It provides both east-west and north-south traffic inspection.
Azure Firewall is offered in two SKUs: Standard and Premium.
You can use Azure Firewall Manager to centrally manage Azure Firewalls across multiple subscriptions. Firewall Manager leverages firewall policy to apply a common set of network/application rules and configuration to the firewalls in your tenant. Firewall Manager supports firewalls in both VNet and Virtual WANs (Secure Virtual Hub) environments. Secure Virtual Hubs use the Virtual WAN route automation solution to simplify routing traffic to the firewall with a few clicks.