Guest Author: This week’s blog was provided to us by Victor Brown – a technical writer and inbound marketer for Cirrus Hosting – a leading Canadian hosting company. Follow Victor and Cirrus on Twitter @CirrusTechLtd, like them on Facebook, and check out their blog on hosting http://www.cirrushosting.com/web-hosting-blog/
While much of the focus is on the public cloud, hybrid clouds combine the best parts of the public cloud and in-house or collocated infrastructure deployments.
When we think about the cloud, it’s mostly the public cloud that grabs our attention. That’s understandable: the public cloud has instigated a revolution in the way companies of all sizes think about IT infrastructure deployment. But there are plenty of cloud naysayers, who tend to fall into three broad categories: traditional IT folks accustomed to complete control over the infrastructure layer; pro-cloud analysts with a genuine interest in exposing the potential weaknesses of the public cloud in order to encourage iteration and improvement; and those within companies who have a vested interest in maintaining the status quo.
Not much will change the minds of the latter group other than a gradual turnover of entrenched influencers, but many in the other two group, who have legitimate — although frequently misguided — concerns about the public cloud can find comfort in the private cloud, especially when coupled with public cloud platforms in a hybrid or multi-cloud environment.
It would be irresponsible for IT decision-makers to ignore the potential business and technical benefits of public cloud platforms. Never before have companies had access to such flexible, scalable, and inexpensive compute and storage power. As I said, it changes the way that businesses think about IT deployments, and, in an age where IT is so central to business success, it changes the way that they are able to do business. That said, no tool offers a universal solution — including the public cloud.
The solution is not to think “Public cloud or traditional in-house infrastructure,” but rather, “public cloud plus private cloud”. Private cloud environments are those that have the same flexible virtual hardware layer as public cloud platforms but in which the underlying physical hardware is dedicated to the use of one organization, rather than being shared between many different organizations in ways that are not transparent to clients.
Private clouds offer answers to many of the security and privacy concerns of IT people, as well as allowing them the measure of ownership over deployment, availability, and technical management they feel they need to be properly accountable for the infrastructure’s performance.
At the same time, private clouds have some of the negative qualities of traditional in-house deployments: CAPEX is high compared to public cloud platforms, and while the virtualized layer is just as flexible as the public cloud, dedicated hardware doesn’t offer the same flexibility of pricing or ease of scaling, both up and down.
Hybrid clouds offer a “best of both worlds” scenario, in which the benefits of the private cloud I’ve mentioned can be augmented by the benefits of public clouds. Workloads can be apportioned between the two modalities as suits the specific needs of a business. Cloud technology should not be dismissed out of hand because of perceived risks of public cloud use, rather hybrid clouds that offer the combined advantage of both public and private should be at the forefront of IT strategy.