A private cloud is a type of cloud computing that provides scalability and self-service capabilities like a public cloud but within a proprietary infrastructure dedicated to a single organization. It is a single-tenant environment where the organization does not share resources with other users. Private clouds can be hosted internally or by third-party providers and offer increased security, performance, and customization compared to public clouds but at a higher cost and with less scalability. Common types include virtual private clouds, managed private clouds, and on-premise private clouds. Major vendors include Cisco, Google, AWS, IBM, and Microsoft.

2. What is a private cloud?
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. A private cloud, also known as an internal or corporate cloud, is
dedicated to the needs and goals of a single organization whereas public clouds
deliver services to multiple organizations.
A private cloud is a single-tenant computing infrastructure and environment,
meaning the organization using it -- the tenant -- doesn't share resources with
other users. Private cloud resources can be hosted and managed by the
organization in a variety of ways. The private cloud might be based on resources
and infrastructure already present in an organization's on-premises data center.
The main advantage of a private cloud is that users don't share resources.
Because of its proprietary nature, a private cloud computing model is best for
businesses with dynamic or unpredictable computing needs that require direct
control over their environments, typically to meet security, business governance or
regulatory compliance requirements.

5. What is the difference between private cloud vs. public cloud?
A public cloud is where an independent third-party provider, such as Amazon Web
Services (AWS) or Microsoft Azure, owns and maintains compute resources that
customers can access over the internet. Public cloud users share these
resources, a model known as a multi-tenant environment. For example, various
virtual machine (VM) instances provisioned by public cloud users may share the
same physical server, while storage volumes created by users may coexist on the
same storage subsystem.
What is the difference between private cloud vs. hybrid cloud?
A hybrid cloud is a model in which a private cloud connects with public cloud
infrastructure, enabling an organization to orchestrate workloads -- ideally
seamlessly -- across the two environments. In this model, the public cloud
effectively becomes an extension of the private cloud to form a single, uniform
cloud. A hybrid cloud deployment requires a high level of compatibility between
the underlying software and services used by both the public and private clouds.

7. Is it better to use a public cloud or a private cloud?
Some businesses may prefer to use a private cloud, especially if they
have extremely high security standards. Using a private cloud
eliminates intercompany multitenancy (there will still be multitenancy
among internal teams) and gives a business more control over the
cloud security measures that are put in place.
However, it may cost more to deploy a private cloud, especially if the
business is managing the private cloud themselves. Often,
organizations that use private clouds will end up with a hybrid cloud
deployment, incorporating some public cloud services for the sake of
efficiency.

8. Advantage of private cloud?
•increased security of an isolated network;
•increased performance due to resources being solely dedicated to one
organization; and
•increased capability for customization, such as specialized services or
applications that suit the particular company.
•More Control
Private clouds have more control over their resources and hardware than public
clouds because it is only accessed by selected users.
Security & privacy
Security & privacy are one of the big advantages of cloud computing. Private
cloud improved the security level as compared to the public cloud.
Improved performance
Private cloud offers better performance with improved speed and space capacity.

9. Disadvantage of private cloud?
Private cloud technologies -- such as increased automation and user self-service
-- can bring considerable complexity to enterprise IT. These technologies typically
require an IT team to rearchitect some of its data center infrastructure as well as
adopt additional software layers and management tools.
1) High cost
The cost is higher than a public cloud because set up and maintain hardware
resources are costly.
2) Restricted area of operations
As we know, private cloud is accessible within the organization, so the area of
operations is limited.
3) Limited scalability
Private clouds are scaled only within the capacity of internal hosted resources.
4) Skilled people
Skilled people are required to manage and operate cloud services.

10. Types of private cloud?
• Virtual private cloud
A virtual private cloud (VPC) is a type of cloud model that offers the benefits of a private
cloud (more control and an isolated environment) with the help of public cloud resources.
• Managed private cloud
A managed private cloud is a type of private cloud model in which the infrastructure is not
shared.
• Hosted private cloud
Hosted private cloud vendors offer cloud servers in their own data centers and are also
responsible for security management.
• On-Premise private cloud
Unlike hosted private clouds, on-premise cloud solutions allow users to host a cloud
environment internally. For such a cloud model, it is necessary to have an internal data
center to host the cloud server.

11. Vendor of private cloud?
•Cisco. The vendor provides its Quickstart Private Cloud to create a self-service
private cloud environment along with varied platforms.
•Google. The tech giant offers a virtual private cloud product that enables highly
customizable network environments for hosting public or private workloads
•AWS. Amazon Virtual Private Cloud lets users launch AWS resources in an
isolated virtual network -- either on premises or through a remote managed
provider -- to create a private instance of public AWS resources.
•IBM. IBM offers private cloud hardware, along with its Cloud Managed Services,
cloud security tools and cloud management and orchestration tools. IBM now
owns Red Hat with its private cloud capabilities.
•Microsoft. Azure Stack helps build and run applications across data centers and
edge locations to remote offices or even the public cloud.
•Oracle. Private Cloud Appliance X8 by Oracle enables compute and storage
capabilities optimized for private cloud deployment.

12. Summary
A virtual private cloud (VPC) is a secure, isolated private cloud hosted
within a public cloud. VPC customers can run code, store data, host
websites, and do anything else they could do in an ordinary private
cloud, but the private cloud is hosted remotely by a public cloud
provider. (Not all private clouds are hosted in this fashion.) VPCs
combine the scalability and convenience of public cloud computing
with the data isolation of private cloud computing.
A private cloud is single tenant. A private cloud is a cloud service that
is exclusively offered to one organization. A virtual private cloud (VPC)
is a private cloud within a public cloud; no one else shares the VPC
with the VPC customer.

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