Azure App Service (which hosts web apps) can securely connect to resources inside an Azure Virtual Network (VNet) by enabling VNet Integration.

In this scenario:

VM1 hosts a MySQL database inside VNET1.

webapp1 (the Azure Web App) needs to access that data privately.

To allow webapp1 to communicate with VM1, you should enable VNet Integration on webapp1, connecting it to VNET1.

This ensures:

Private, secure communication between the App Service and the virtual machine.

No need to expose public IPs or deploy extra load balancers.

Incorrect options:

B. Internal Load Balancer → Used to balance internal traffic among VMs, not for connecting web apps.

C. Application Gateway → Provides HTTP load balancing, not private connectivity.

D. VNet Peering → Used to connect different VNets, not to connect an App Service to a VNet.

✅ Final Verified Answer: A. Connect webapp1 to VNET1