Nearly half of large enterprises will have hybrid cloud deployments by the end of 2017. Hybrid cloud computing is at the same place today that private cloud was three years ago; actual deployments are low, but aspirations are high, says Gartner in a published news note from Oct. 2013.
Almost every organization today utilizes some form of cloud computing, usually public clouds. In its State of the Cloud survey RightScale found 94% of organizations are running applications or experimenting with infrastructure-as-a-service, 87% of organizations are using public cloud, and 74% of enterprises have a hybrid cloud strategy and more than half of those are already using both public and private cloud. RightScale estimates may be a bit more generous than Gartner but both come to the same conclusion in the end: Hybrid cloud is the approach of choice.
Executive management, however, prefers private clouds for the control and security they promise. That the actual control and security may not be much better than what the organization could achieve in the public cloud if it were rolled out properly, but executives don’t understand that. So private clouds are management’s darling for now.
Private clouds, however, fail to deliver the key benefits of cloud computing—cost efficiency and business agility. The organization still has to invest in all the IT resources, capacity, and capabilities of the private cloud. Unlike the public cloud, these are not shared resources. They may repurpose some of their existing IT investment for the private cloud but they invariably will again have to acquire additional IT resources and capacity as before. And, the demand for resources may increase as business units come to like IT-as-a-Service (ITaaS), the rationale for private clouds in the first place.
As for business agility with private clouds—forget it. If new capabilities are required to meet some new business requirement, the organization will have to build or acquire that capability as it did before. The backlogs for developing new capabilities do not magically go away with ITaaS and private clouds. If business agility requires the business to pivot on a moment’s notice to meet new challenges and opportunities there is only one way the private cloud can do it–develop it in-house, the old fashioned way.
Hybrid clouds provide the answer. Gartner, Inc. defines a hybrid cloud as a cloud computing service that is composed of some combination of private, public and community cloud services from different service providers. In the hybrid cloud scenario, the company can rely on its private cloud and happily cruise along until it needs a capability or resource it can’t deliver. Then the company reaches out through the hybrid cloud to the public cloud for the required capability. Rather than build it, the organization basically rents the capability, paying only for what it uses when it uses it. This is ideal when the organization needs to temporarily augment resources, capacity, or capabilities to meet an unanticipated need.
Hybrid clouds, unfortunately, don’t just pop up overnight. First you need to lay the groundwork for your hybrid cloud. That entails identifying the specific cloud resources and services in advance, making the necessary financial arrangements with appropriate public cloud vendors, and establishing and testing the connections. Also, check with your auditors who will want to be assured about security and governance and similar details.
While you are at it, make sure your networking and security teams are on board. Ports will need to be opened; the firewall gods will need to be appeased. You also will need to think about how these new capabilities and services will integrate with the capabilities and services you already have. This isn’t necessarily a major undertaking as IT projects go but will take some time—days or, more likely, a few weeks—to get the approvals, assemble all the pieces, and get them configured and tested and ready to deploy.
As RightScale notes: although the use of cloud is a given, enterprises often have different strategies that involve varying combinations of public, private, and hybrid cloud infrastructure. For most, however, the hybrid cloud provides the best of all cloud worlds, especially in terms of cost and agility. You can run ITaaS from your private cloud and pass through your hybrid cloud whenever you need public cloud resources you don’t have in house. Just make sure you set it up in advance so it is ready to go whenyou need it.