We can connect 2 VNET using following options:
- VNET Peering
- VPN Gateway
VNET Peering
VNET Peering is the best option as it gives fastest connectivity using the Microsoft backbone infrastructure using Private addresses.
There are 2 types of VNET Peering:
- VNET Peering for same region connectivity
- Global VNET Peering for different region connectivity
VPN GatewayIf you have one of the VNET in an On-Premise then you can choose the VPN Gateway option. It also offers Encryption which could make a decision. However VPN Gateway will be slower compared with Peering, More Configuration & More Setup Time overheads exists. Comparison |
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| Description | VNET Peering | VPN Gateway | |
| Easy Setup | Yes | No | |
| Encryption | No | Yes | |
| Cross-Region Support | Yes | Yes | |
| Pricing | Less | More | |
| Speed | High | Low | |
| Bandwidth Limit | No | Yes | |
| Public IP | No | Yes | |
| On-Premise Support | Complicated | Yes |
References
https://azure.microsoft.com/en-us/blog/vnet-peering-and-vpn-gateways/
