Azure VM DNS to Azure Private DNS Zone migration architecture showing a seven-step transition from self-managed DNS servers to Azure's managed DNS service. The current state features a Standard_D2s_v3 VM hosting DNS with NSG, Public IP, and monitoring via Azure Monitor and Key Vault, while the target state consolidates DNS resolution through Azure Private DNS Zone (contoso.internal) and Azure Public DNS Zone (contoso.com) linked to application VNets. Migration steps include exporting zone files, creating private DNS zones, importing records, updating VNet DNS settings, validating resolution, and decommissioning the legacy VM. This pattern eliminates operational overhead, improves availability, and aligns with Azure best practices for hybrid and cloud-native workloads including App VMs, AKS Clusters, and Application Gateways.