VNET Peering connects networks seamlessly within and across regions. Local and Global Peering pricing differs region to region.
Lets Connect the Virtual Network from UAE North to Central US
UAE North Virtual Machine – 10.1.1.4 255.255.255.0 10.1.1.1
Central US Virtual Machine – 10.0.0.4 255.255.255.0 10.0.0.1
Lets do peering between this two Virtual Machines. Go to Virtual Networks.
Add Peering
Click OK.
Now Both Virtual Machines can be communicated with no restriction. (All ports are opened by Default)
VNET Peering Pricing
https://azure.microsoft.com/en-us/pricing/details/virtual-network/