Exploring Private DNS + Azure Application Gateway for Secure Web Apps

This article provides a detailed walkthrough on combining Azure Private DNS with Azure Application Gateway to create a secure, internal-only application delivery pattern. It covers why this architecture is beneficial for line-of-business portals, partner apps, and hybrid workloads, ensuring traffic remains private while enabling custom-domain names and centralized routing. The guide includes step-by-step PowerShell commands to deploy networking components, create a Private DNS zone, and link it to a VNet. It emphasizes Layer 7 load balancing, SSL/TLS termination, WAF, and internal name resolution for hybrid environments via VPN or ExpressRoute.