This console app sample code provides some simple functions for checking if the executing code is running in Azure and/or Hyper-V.
For Azure detection, the network interfaces are enumerated and if an adapter has a DNS suffix of "cloudapp.net", it's assumed to be in Azure. Keep in mind that the internal DNS suffix is independent of the public DNS name, so it should continue to work regardless of the public domain name.
The code also detects the optional Azure guest agent. If present, it's assumed to be Azure.
For Hyper-V detection, the hardware vendor is checked. This could be expanded to check for other vendors such as VMWare or VirtualBox.
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