title: Join VMSS VM's to domain
body: <p>It says here: <a href="https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-faq" rel="nofollow noreferrer">https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-faq</a></p>
  
  <p>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.</p>