Multi-Tenancy,O/S Virtualization and Cloud - What is the Right way??

I am a member of the Trusted Computing's Multi-Tenancy Working group where we are dealing with one of the biggest promises of cloud - how do I have multi-tenancy and still have security controls in place is to be able to host multiple customers in a shared infrastructure. . 

What industry is  doing today is to avoid the issue of multi-tenancy all-together, by focussing only on hypervisor based virtualization. IMO, hypvervisor based virtualization is not real cloud - even though it does it bring benefits that are somewhat cloud like.  Most of the hypvervisor based virtualization usually drives soft-lifting the siloed implementations. While this brings consolidation into play - this really is only a part of the promise of cloud.  What cloud computing really provides is the ability to leverage scale that goes beyond the O/S virtualized boundaries.  The key question then really becomes this - when do we need to STOP doing hypervisor based virtualization and start looking  at various other types of virtualization that will allow us to have secure boundaries ( isolation) and yet provide the cloud like scale that we want to get. 

I will try to answer this key question as I go through the next few postings.

 

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Blog that discusses Cloud Computing and it's place in Federal, State and Local Governments. Focuses on US Federal Government

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