I would like to see a dynamc cloud with less resistance to expanding the system to

Different data centers

I think that we are struggling with moving to a private cloud computing model while we still have not gotten as mature as we should be within the traditional IT silos being able to provide a service oriented view.  A lot of our organization still thinks of the cloud just as virtualization+.  Maturing our IT organization is probably the biggest challenge for us.

Top issue I see is the security policy barrier.   Cloud may make good business sense but I see great reluctance cominng from  CISOs.  Allowing our most important asset - our data - to move outside our direct control will take a major policy shift.

I would like to see a discussion on the concepts of multi-tenancy and how they apply in cloud in Saas architectures. Have we put enough thought into this?