Page 67 - Cloud Essentials

Differences Between Public and Private Clouds

The main difference between private and public clouds is that private
clouds are provisioned for exclusive use by a single organization. Public
clouds offer IT services to anybody with an Internet connection.

Private Clouds
Private clouds give an organization control over their own data security and
resource access. Private clouds can be owned, managed, and operated by an
organization, a third party, or a combination of both. This means a private
cloud may exist on or off the premises or both.
Departments or business units within an organization are treated as cloud

resource consumers, and they benefit from elastic rapid provisioning and
scalability of compute resources. As a result, an organization realizes a
more efficient and productive use of its investment in IT.
Figure 3-1 shows a private network of cloud computing resources
available only to business units within an organization. Technically, the
computing resources do not have to be hosted on the premises; they just

have to be made available for the exclusive use of the organization on a
private network.

FIGURE 3-1 Example of a private cloud infrastructure

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