title: Windows Azure - What is the use of internal IP address?
body: <p>I had always been using the normal public IP to communicate between my virtual machine. However as I see in the portal there is an INTERNAL IP ADDRESS and I wonder what is the practical use of that?</p>
  
  <p>Is it that using this internal IP to communicates between VMs would be faster? And is this restricted to VM in the same geo-region?</p>