The document discusses several Azure network architectures including: 1) An Azure landing zone with firewall/WAF that includes hub-spoke VNets with web, business, and data tiers separated across spokes connected to an on-premises network. 2) An Azure network architecture deployed to a primary region including production and non-production subscriptions, VNets, and resource groups separated by function and connected to an on-premises network via VPN. 3) A hub-spoke network topology with shared services and subnets in a central hub VNet and workloads separated across spoke VNets connected to the hub.