Configure Azure Application Gateway ​

Application Gateway has a series of components that combine to route requests to a pool of web servers and to check the health of these web servers.

Frontend configuration ​

You can configure the application gateway to have a public IP address, a private IP address, or both. A public IP address is required when you host a back end that clients must access over the Internet via an Internet-facing virtual IP.

Backend configuration ​

The backend pool is used to route requests to the backend servers that serve the request. Backend pools can be composed of NICs, virtual machine scale sets, public IP addresses, internal IP addresses, fully qualified domain names (FQDN), and multi-tenant back-ends like Azure App Service. You can create an empty backend pool with your application gateway and then add backend targets to the backend pool.