Tuesday, February 28, 2017

Cloud Deployment Model

Cloud deployment model represent the type of environment, which is distinguished based on size, access criteria and ownerships. There are main four type of cloud computing models: public, private, community and hybrid cloud.

Public Cloud:

In public cloud model, a third-party cloud service provider provides the cloud services such as messaging, office applications, software development applications, and storage space to other organizations on the internet. The service provider is responsible for hosting and managing the services as the public cloud is hosted on the premises of the service provider.

The benefits of public cloud include:
1. Easy and cost-effective usages of the services
2. Scalable services to meet the business requirements
3. Economical as the pricing of the services is on the basis of pay-as-you-use

Private Cloud:

In private cloud model, the data and the IT infrastructure are managed by the organization that hosts the cloud services. These cloud services are usually used for an enterprise itself and exist within the firewall and boundaries of the organization. The private clouds are implemented in the organization’s data center and managed by internal IT resources.

A private cloud model is used within organizations to handle large data traffic of various users in an enterprise. Advances in virtualization and distributed computing have allowed corporate network and data center administrators to effectively become service providers that meet the needs of their customers within the corporation.

A private cloud model overcomes the security and privacy risks since it is hosted on a controlled environment.

Community Cloud:

Community cloud model contains the features of both the public and private cloud. In this model, the access is limited to users of cloud community and outside parties are not allowed to access the services unless they are not authorized to use the resources by the community.

It may be hosted, managed, owned and operated by one or more organizations within the community. Unlike public cloud model, in this model the infrastructure is only utilized by the members of the community.

Hybrid Cloud:

Hybrid cloud model is a combination of two or more different cloud models which are isolated from each other but are connected with each other by rules and standardize technology that enables data and application movement.

This type of model is used where the organization needs different clouds based on the needs. For eg: private cloud to store its sensitive information and public cloud to share the computing resources with the other organizations.

Hybrid clouds are difficult to create and maintain as they have complex architectures and different infrastructures of public and private cloud providers.
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