Virtual network design

In this section, we will consider some of the popular designs and use case scenarios of virtual networks.

There can be multiple usages of virtual networks. A gateway can be deployed at each virtual network endpoint to enable security and transmit packets with integrity and confidentiality. A gateway is a must when connecting to on-premises networks; however, it is optional when using Azure VNet peering. Additionally, you can make use of the Gateway Transit feature to simplify the process of extending your on-premises datacenter without deploying multiple gateways. Gateway Transit allows you to share an ExpressRoute or VPN gateway with all peered virtual networks. This will make it easy to manage and reduce the cost of deploying multiple gateways.

In the previous section, we touched on peering and mentioned that we don't use gateways or the public internet to establish communication between peered networks. Let's move on and explore some of the...