How do you get to the cloud? First, get on the road.

I follow the clouderati\all list on Twitter to attempt to keep up with what's going on in cloud, especially now that I don't have specific responsibilities or projects in that area. It's generally stimulating, and given the rate of change in technology emergence and adoption, it's only a matter of time before such projects arise.

One running thread has been something along the lines of "Is private cloud really cloud?" Large enterprise infrastructure vendors want you to say, "Of course - it has cloud right there in the name!" while public cloud providers tell you, "Of course not - it fails the definition on any number of levels!" I tend to lean toward the viewpoint of people working in the public cloud - after all, elasticity is a key tenet and it's extremely difficult (if not impossible) to be elastic in one's own data center.

That said, I'm coming around more and more to the idea of using private cloud-like infrastructure as a "gateway drug" for people to eventually move to the public cloud, especially if it fulfills the goal of better aligning IT with what the business actually does. My organization is both large and decentralized, with IT departments at various levels from historical decisions and funding. As a result, we have what you would expect to find in such a place - many data centers and server rooms, lots of fragmentation in data storage and protection, and an abundance of service duplication.

For a number of reasons, the institution is not fully comfortable with moving its data to the public cloud; it would rather store its proprietary (and often heavily regulated) information on premises. At the same time, we (and presumably we're not alone) continually seek ways to both improve our economies of scale and reduce the risk of data and productivity loss for our internal customers. Establishing a multi-tenancy infrastructure in the institution's primary data center (i.e. private cloud) helps in both cases.

• The burden of infrastructure management shifts from many IT departments to one dedicated group, where they can concentrate expertise and gain higher server/staff ratios.
• The various IT departments, mostly free from hardware, storage, and backup maintenance, can use the gained time to engage with their customers and build/deploy services specific to their needs rather than simply "keep the lights on."
• Business leaders gain more bang for their IT buck, which is made visible through more rapid service deployment and productivity increases.

Once an organization reaches its steady state in a private multi-tenant infrastructure, it's natural to ask, "What's next?" And the answer increasingly will become, "Don't upgrade this system, migrate to the public cloud." IT will be able to show a story (with supporting data) of the benefits of moving from traditional infrastructure to private cloud, and then how those benefits can increase again with the move to public cloud. Though it may not be the most efficient way to get there, it may yield enough initial benefits to make a potentially scary migration more like a logical progression.