Azure VM Scale Set #Part 3: How to Create a Virtual Machine scale set in Azure

In the first two parts of this series, we connected to a Windows VM, added a data disk, and captured a reusable image with Azure Compute Gallery. Now, in Part 3, we’ll use that custom image to create a Virtual Machine Scale Set (VMSS), enabling scalable, load-balanced deployments to meet dynamic workload demands efficiently.

An important concept of VMSS is an Azure load balancer; it distributes incoming traffic to a pool of VMs or VM instances. It is always automatically configured in Azure VMSS.

Go over the other parts of the series before this:

• Azure VM Scale Set #Part 1: How to Connect and Add a Data Disk to a Windows VM




• Azure VM Scale Set #Part 2: How to Capture the image of a VM with Azure Compute Gallery

Let's dive into the VMSS setup!

Part 3: How to Create a Virtual Machine scale set in Azure

• In the VM image created, click the + Create VMSS button.
  
  




• Give the VMSSS a Name




• In orchestration mode, select Flexibile
  
  Note: In flexibility mode, you manually create and add a VM of any configuration to the scale set. While in uniform mode, you define a VM model, and Azure will generate identical instances based on that model.




• Leave everything else as default




• Click on Review and create
  
  

• Click Go to resource
  
  

• Go to Availability + scale section


• Select Scaling
  


• Set the Instance count to the number of VMs you want to Create



• Save the configuration
  
  




• Confirm the VMs are running
  
  

Conclution:

With this final step, you've successfully created a Virtual Machine Scale Set using a custom image from Azure Compute Gallery, building on the foundational tasks of connecting to a VM, adding a data disk, and capturing a reusable image. Your scalable, load-balanced infrastructure is now ready to handle dynamic workloads efficiently, completing the journey toward optimizing your Azure environment.

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