Cloud computing is a general term for anything that involves delivering hosted services over the Internet. Simply, cloud computing is the delivery of computing services—including servers, storage, databases, networking, software, analytics, and intelligence—over the Internet to offer technological innovations, elastic resources, and economies of scale. You only pay for cloud services you use, helping lower your operating and capital costs, run your infrastructure more efficiently and scale as your business needs change.
A private cloud refers to cloud computing resources used exclusively by a single business or organisation. A private cloud is any organisation’s proprietary. It can be physically located on the company’s on-site datacentre.
Hybrid clouds, utilizes both public and private clouds and bound them together by technology that allows data and applications to be shared between them.