Route table in Azure

Azure automatically routes traffic between Azure subnets, virtual networks, and on-premises networks. If you want to change any of Azure's default routing, you do so by creating a route table. If you're new to routing in virtual networks, you can learn more about it in virtual network traffic routing or by completing a tutorial.

you can decide where the network traffic will go to next destination or hop type --> Virtaul Network, Network Appliance, internet and Virtual Network Gateway