Q: Can an Azure virtual machine have an Internet-routable IP address?
A: Typically, virtual machines running in a cloud service can be accessed from the Internet via an endpoint defined on the cloud service's virtual IP (VIP) address. It's also possible to use a pass-through IP address, which is a reserved IP address in a region that can then be allocated directly to a virtual machine—also known as an instance-level public IP (PIP) address. The exact process to use a pass-through IP address is documented in "Instance-Level Public IP Addresses." Note that even when a PIP address is assigned to a virtual machine, the cloud service still has a VIP address for use by other virtual machines in the cloud service.