Join VMSS VM's to domain - azure

Question

It says here: https://learn.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-faq
That I can join a virtual machine scale set to an Azure AD domain, but I dont understand how you implement the JSON extension they state to use, I cant work out where I put it.
I have created the VMSS but cannot see an Extensions bit on it.

Answer 1

You can use script\dsc extensión as you normally would on a regular VM.
Sample DSC extensión:
{
"name": "Microsoft.Powershell.DSC",
"properties": {
"publisher": "Microsoft.Powershell",
"type": "DSC",
"typeHandlerVersion": "2.19",
"autoUpgradeMinorVersion": true,
"settings": {
"configuration": {
"url": "url_goes_here.ps1",
"script": "script.ps1",
"function": "function"
},
"configurationArguments": {
"domainName": "domain.name"
}
},
"protectedSettings": {
"configurationArguments": {
"adminCreds": {
"userName": "User",
"password": "Password"
}
}
}
}
}