Is this what you are looking for? http://kristiannese.blogspot.no/2014/06/azure-pack-working-with-tenant-public.html
If you don't want to use the public cloud, then Azure Pack, System Center and Hyper-V is the components you need to instantiate a cloud on your own.
-kn
Kristian (Virtualization and some coffee: http://kristiannese.blogspot.com )