Last year, my colleague, James Staten, and I published evaluations of the (internal) private cloud and public cloud markets — this year we’re going to fill in the remaining gap in the IaaS space, by publishing a Forrester Wave evaluation on Hosted Private Cloud Solutions. Vendors participating in this report will be evaluated on key criteria, a demo following a mandatory script, and customer references for validation of the solution. Throughout the research process I’ll be providing some updates and interesting findings before it goes live in early Q4 2012.
So, what is hosted private cloud? Like almost every product in the cloud space, there’s a lot of ambiguity about what you’ll be getting if you sign on to use a hosted private cloud solution. Today, NIST defines private cloud as:
The cloud infrastructure is provisioned for exclusive use by a single organization comprising multiple consumers (e.g., business units). It may be owned, managed, and operated by the organization, a third party, or some combination of them, and it may exist on or off premises.
Hosted private cloud refers to a variation of this where the solution lives off-premises in a hosted environment while still incorporating NIST's IaaS service definition, particularly where “[t]he consumer does not manage or control the underlying cloud infrastructure but has control over operating systems, storage, and deployed applications.” But there’s a great deal of variation in today’s hosted private cloud arena. Usually solutions differ in the following ways: