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Refaat Issa, Senior Program Manager on the Nano Server team shows you a PXE boot bare metal install of Nano Server.
Be sure to tune into the Microsoft Ignite session where Jeffrey Snover will go into lots of detail on Nano Server and all its goodness.
Full details on the Windows Server blog: https://blogs.technet.com/b/windowsserver/archive/2015/04/08/microsoft-announces-nano-server-for-modern-apps-and-cloud.aspx