Azure's central networking point that connects multiple networks, branch offices, and VPN connections. Like a grand central station for network traffic - all routes converge here and get directed to their destinations.
A global corporation uses Virtual WAN Hub to connect 100+ branch offices worldwide to their Azure resources through a single, managed hub.
All are hub-and-spoke connectivity services that centralize routing between VPC/VNet networks and on-prem/branch sites. Azure Virtual WAN Hub is the managed hub inside Virtual WAN, integrating VPN/ExpressRoute/SD-WAN and optional secured hub (Azure Firewall) with automated routing.