Microsoft Certified: Azure Security Engineer AssociateSecure data and applicationsMedium
A company is hosting a critical web application on Azure App Service. The application processes sensitive customer data, and the security team requires that all network traffic to and from the App Service be strictly isolated within the company's virtual network, preventing any exposure to the public internet. Furthermore, the App Service must be able to securely access resources within the virtual network without traversing public endpoints. Which Azure App Service networking feature should be configured?
- AApp Service Environment (ASEv3)
- BVNet Integration (Regional)
- CPrivate Endpoint for App Service
- DIP Restrictions
Show answer & explanationAnswer & explanation
Correct answer: A. App Service Environment (ASEv3)
App Service Environment v3 (ASEv3) deploys an Azure App Service into a customer's Azure Virtual Network. This provides complete network isolation, meaning all inbound and outbound application traffic occurs entirely within the virtual network, with no public internet exposure. It also enables secure access to virtual network resources without public endpoints, directly meeting all requirements.
Why the other options are wrong
- B. VNet Integration (Regional) allows the App Service to make outbound calls to resources within the VNet but does not isolate inbound traffic from the public internet into the App Service.
- C. Private Endpoint for App Service allows clients within a VNet to securely access the App Service over a private link but does not fully isolate the App Service itself, which still has a public endpoint unless public access is explicitly disabled.
- D. IP Restrictions control inbound traffic based on IP addresses but do not provide full network isolation within a VNet or prevent public internet exposure for the App Service itself.
Azure App Service Environment (ASEv3)
A single-tenant deployment of Azure App Service that runs entirely within a customer's Azure Virtual Network, providing complete network isolation and scalability.
- Full network isolation for inbound and outbound traffic.
- Deployed directly into a customer's VNet.
- Ideal for high-security, high-scale, and regulatory compliance scenarios.
Memory trick: ASEv3 is like putting your App Service in its own private, secure VNet bubble.