
Explanation:
Box 1: Network peering
Network peering
VNet Peering connects two VNets, enabling resources in different VNets to communicate with each other. Peering can be done within the same region or across different regions.
VNet Peering Pricing
Intra-Region VNet Peering
$0.01 per GB (inbound and outbound)
Global VNet Peering (Cross-Region)
Varies by Zone (Zone 1: $0.035 per GB, Zone 2: $0.09 per GB, Zone 3: $0.16 per GB) Box 2: Azure VPN gateway The Azure VPN Gateway is designed specifically to ensure secure, encrypted communication between your on-premises network and your Azure virtual networks (VNets) over the public Internet. It functions as a bridge, creating a virtual private network (VPN) tunnel to direct traffic safely between your different environments.
Reference:
https://azurenavigator.com/understanding-azure-network-pricing/
https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-about-vpngateways