Architecture Description:
SQL Express on Windows Server 2025 in Azure
SQL Express on Windows Server 2025 Architecture in Azure
This architecture illustrates how the SQL Express on Windows Server 2025 Marketplace image is deployed and integrated within a typical Azure customer environment.
1. Resource Organisation and Networking
All components are deployed within a dedicated Azure Resource Group, ensuring logical organisation and lifecycle management.
At the core sits an Azure Virtual Network (VNet), which provides secure, isolated network communication. Inside the VNet, the workload is placed within a subnet, protected by a Network Security Group (NSG).
2. External Access and Name Resolution
A Public IP Address assigned to the virtual machine
Azure DNS, allowing access using a domain name instead of an IP
Traffic flow:
Internet → Azure DNS → Public IP → Virtual Machine
3. Compute Layer (Core Workload)
The central component is an Azure Virtual Machine running:
Windows Server 2025
SQL Server Express Edition
The VM includes a Network Interface (NIC) to connect securely to the subnet.
This setup provides a ready-to-use SQL environment without manual installation, configuration, and patching.
4. Storage Architecture
Operating System Disk (OS Disk) – Hosted on Azure Managed Disks
Data Storage (SQL/Data Disks) – Managed Disks for scalability and durability
Temporary Storage (Temp Disk) – Local SSD for low-latency performance
5. Monitoring and Diagnostics
Operational visibility and troubleshooting are supported through:
Diagnostic Logs generated by the VM
Centralised storage in an Azure Storage Account
This enables monitoring, auditing, and integration with Azure Monitor.