Private cloud is a type of cloud computing that delivers similar advantages to public cloud, including scalability and self‐service, but through a proprietary architecture. Unlike public clouds, which deliver services to multiple organizations, a private cloud is dedicated to the needs and goals of a single organization. The Gartner Institute has defined five key attributes for private clouds:

• Offering resources (infrastructure and applications) as services

• Flexibility and scale that meet client demands

• Resource sharing among a large number of users

• Measurement and payment according to use of the service

• Use of Internet protocols and technologies to access cloud resources