How to effectively link isolated apps of the same product?

1. What is regional VNet integration?
2. How to do VNet integration?
3. Which two features ensure high level security by setting your applications in isolation in Azure?

What is regional VNet integration?

The VNet integration feature has two variations: Regional virtual network integration: Connect to Azure virtual networks in the same region. You must have a dedicated subnet in the virtual network you're integrating with.

How to do VNet integration?

When you add the peering connection on the destination virtual network, enable Allow virtual network access and select Allow forwarded traffic and Allow remote gateways. Go to App Service plan > Networking > VNet integration in the portal. Select the virtual network your app connects to.

Which two features ensure high level security by setting your applications in isolation in Azure?

The identity and access stack helps enforce isolation among subscriptions, including limiting access to resources within a subscription only to authorized users. Compute isolation – Azure provides you with both logical and physical compute isolation for processing.