A private cloud is a model of cloud computing in which a partitioned and secure cloud based environment is provided for individual clients. As with any other cloud model, private clouds provide computing power as a service within a visualized environment using an pool of physical computing resource. However, the private cloud model, this computing power is only accessible by a single organisation providing which offers greater control and privacy.
Public and private cloud deployment models differ. Public clouds, such as those from Amazon Web Services or Google Compute Engine, share a computing infrastructure across different users, business units or businesses. However, these shared computing environments aren’t suitable for all businesses, such as those with mission-critical workloads, security concerns, uptime requirements or management demands. Instead, these businesses can provision a portion of their existing data center as an on-premises — or private — cloud.
A private cloud provides the same basic benefits as that of a public cloud. These include self-service and scalability; multi-tenancy; the ability to provision machines; changing computing resources on-demand; and creating multiple machines for complex computing jobs and business units pay only for the resources they use.
In addition, private cloud offers hosted services to a limited number of people behind a firewall, so it minimizes the security concerns some organizations have around the cloud. Private cloud also gives companies direct control over their data.