IT is the backbone of any organization. To keep the backbone strong, IT managers must make sure whatever the services are being offered to IT users must have high redundancy, high availability and faster time to access it.

A private cloud describes an environment built and operated by a single enterprise for its internal use. These offerings are specifically designed for the different units in the organization with high capex and opex. The biggest disadvantage of the private cloud offering is to maintain the complete life cycle management by the IT team.

IT organizations understood that if they to reduce the cost per bit of the IT infrastructure in that case private cloud would not be the best choice, they must have to opt for public cloud. A public cloud describes a cloud computing offering that can be accessed by the IT users over the internet. It is like you are accessing your google account from anywhere in the world. Examples of public clouds include Microsoft Cloud Services (such as Microsoft Azure or Office 365), Salesforce, Dropbox, and Amazon AWS.

Now the questions comes, when to use public and private cloud. The strategy is up to the IT organizations, they can deploy high load and non-security critical applications over the public cloud and rest all in private cloud.