Private cloud expensive, public cloud insecure? Go hybrid

Article by Nitin Mishra

Forbes magazine recently did a roundup of the current market trends on cloud computing and found, among other things, that,
  • by 2018, 59% of the total cloud workloads will be SaaS workloads, up from 41% in 2013
  • 42% of IT decision makers are planning to increase spending on cloud computing in 2015, with the greatest growth in enterprises with over 1,000 employees
  • By 2018, more than 60% of enterprises will have at least half of their infrastructure on cloud-based platforms.

Clearly, cloud is the way to go. Problem is, which cloud is right for your enterprise - private, public or hybrid?

In a public cloud, the IT infrastructure - that means hardware, networking, storage, services, applications, and interfaces - is owned and operated by a service provider such as Amazon, Google, Microsoft, and others. In a private cloud, the IT infrastructure is owned and operated by a service provider such as IBM, Citrix, Cisco, etc. for the exclusive use of one enterprise. A hybrid cloud is a combination of the two. One or several touch points exist between the public and private cloud environments. In India, Netmagic is a leading provider of private, public, and hybrid cloud services.

Not surprisingly, enterprise customers are wary of moving their workloads to public clouds because of data security and privacy concerns. In such cases, a hybrid cloud is a compelling alternative.

In a hybrid cloud, the public and private cloud infrastructures operate independently of each other and communicate over an encrypted connection. This means that a company can store sensitive data on the private cloud and still leverage compute resources from the public cloud to run applications that rely on that data. This ensures that no sensitive data is stored long-term on the public cloud component. In Hybrid clouds offer three clear advantages for enterprise computing. One, the private cloud component enables an on-premise or third-party hosted private infrastructure that is directly accessible without going through the public internet. This greatly reduces access time and latency in time-sensitive environments such as a stock exchange.

Two, a hybrid cloud allows you to have on premise IT infrastructure that can support the base workload for your business, and still enable you to spill over spikes in IT demand, for example during a holiday rush, to the public cloud. Extending to the public cloud is a cheaper proposition than investing in a private infrastructure that sits idle for most of the year.

Three, building out the private end of a hybrid cloud allows companies to leverage their existing IT infrastructure.


Hybrid cloud adoption is an effective option for businesses that worry about security or need to have some parts of their IT infrastructure on premise. In such cases, a private cloud to handle the base workload with a public cloud to manage spikes is cost-effective.

Companies across the world clearly like the idea of the hybrid cloud model. IT research firm Gartner predicts that almost half of large enterprises globally will have deployed a hybrid cloud by the end of 2017, with 2016 being a "defining" year where they will start to move away from private into hybrid .