In the private cloud, the resources and services are accessible within an organization. The private cloud model provides a high level of security as it holds operational and sensitive information and is operated only by a single organization. The private cloud offers a proprietary environment dedicated to a single customer or organization. The organization itself manages the private clouds; it is a single-tenant environment. The organizations have full access to the infrastructure, and authorized people can access the private cloud.

Most private clouds are hosted on-site at the organization's data centre, and a cloud architect constructs a fully private cloud. It may also be hosted on cloud service provider infrastructure.

This type of cloud is also called a corporate cloud or internal cloud. Many companies choose the private cloud because they may deal in intellectual property, medical, financial, personally identifiable, confidential, and other sensitive information. All these data require a high level of security and control. 

There are many private cloud providers such as HPE, DELL, IBM, VMware, RedHat, Oracle, Microsoft, Cisco, NetApp, Amazon Web Services, etc.

Benefits of Private Cloud

1. Security and Access Control:  Private cloud provides more security than the public cloud because it can be accessed within an organization rather than publicly available. 
2. Improved Performance: The private cloud offers better performance and speed as it is accessible to a limited number of people.
3. Complete Control over Hardware and Software: Private cloud customers are free to purchase software and hardware as per their choice, and they can customize servers as per their needs. It doesn't depend upon the service provider.

Disadvantages of Private Cloud

1. High Cost: The private cloud is costlier than the public cloud because its set-up and maintaining new hardware resources are costly.
2. Location Dependent: Private cloud is location dependent, as it is accessible locally and can't be accessed from anywhere.
3. Scalability: If an organization needs extra computing power from the private cloud, it will take more money and time to scale up the additional private cloud resource.
4. Skilled Employees: To manage and operating cloud services requires skilled and experienced employees to handle them.