Cloud Computing Models: Public VS Private VS Community VS Hybrid

  • November 21, 2014
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Cloud computing is a unique computing type that provides access to the appropriate network and on-demand set of configurable computing resources such as networks, servers, storage, applications and services. These computing resources can be provisioned and released quickly and without much effort, management and interaction by the cloud hosting services provider.

The term “cloud” is commonly used to represent the provisioning of computing resources through Internet.

Types of Cloud Computing Model

There are four different types of cloud computing model or cloud infrastructure. These models are distinguished based on the ownership of the cloud infrastructure. Following are the four types of cloud models:

  • Public Cloud Infrastructure
  • Private Cloud Infrastructure
  • Community Cloud Infrastructure
  • Hybrid Cloud Infrastructure

Let’s have a look at the cloud computing models definitions and its advantages and disadvantages.

Definitions, Advantages and Disadvantages of Cloud Models

Definition of Public Cloud

It is a type of cloud in which the infrastructure and logical resources that are part of cloud environment are available to the public via Internet. This is usually owned by a provider who manages the infrastructure and services offered.


  • Increased scalability and unlimited resources;
  • Resource efficiency via pay-per-use model;
  • Time and cost savings.


  • Sharing of Infrastructure with multiple organizations;
  • Lacks of transparency, as the clients are unaware about the same resources and storage being used by other multiple services.

Definition of Private Cloud

This is a computing model where a cloud is privately implemented within the corporate firewall and is under the control of the organizations IT department.


  • Compliance with internal policies;
  • Ease of collaborative work between distributed sites;
  • Complete control over the resources.


  • High cost material;
  • Hired infrastructure unit;
  • Return on Investment (ROI) is slow.

Definition of Community Cloud

This computing model is happen when two or more organizations form a partnership to implement a cloud infrastructure with a similar goal-oriented and a common security framework and privacy.


  • Compliance with internal policies;
  • Cost Reduction by sharing of infrastructure and resources;
  • Return on Investment (ROI) is fast.


  • Managed by organization or third party;
  • Hired infrastructure unit.
  • Definition of Hybrid Cloud

The hybrid cloud is a broad term involving a joint use of multiple cloud models or infrastructures any of the above three types, which are kept as separate entities, however which in turn are associated by standardized or proprietary technology, offering data and application portability.

Advantages and disadvantages of hybrid cloud are same as those cloud models used to form a hybrid cloud hosting environment.


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