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Cloud Computing


Cloud computing is a paradigm shift that provides computing over the internet. A cloud computing service consists of highly optimized virtual data centers that provide various software hardware and information resources for use when needed organizations can simply connect to the cloud and use the available resources on a pay per use basis this helps companies avoid capital expenditure on additional on-premises infrastructure resources and instantly scale up or scale down according to business requirements.

You can deploy a cloud computing service by using three different models a private cloud, a public cloud, or a hybrid cloud.

A private cloud function solely for one organization on a private network and is highly secure.

A public cloud is owned by the cloud service provider and offers the highest level of efficiency and shared resources

A hybrid cloud is a combination of private and public deployment models in a hybrid cloud-specific resource that is run or used in a public cloud and others are run or used on-premises in a private cloud.

This provides increased efficiency cloud computing consists of the following service models:

  1. Infrastructure as a Service (IaaS)
    By using the IaaS model organizations get infrastructure components such as computing power and storage capacity.
    Here the organization has control over the entire IT infrastructure including the hosting environment and their applications.
    However, the organization to allocate additional staff to maintain and manage the infrastructure and the application.
    Microsoft has proposed remote desktops and virtual machines to Microsoft Windows Azure as an IaaS offering.

  2. Platform as a Service (Paas)
    The PaaS model provides organizations with a platform or a runtime environment to create and deploy applications.
    Here the organization is only responsible for the development, maintenance, and management of the applications.
    Microsoft provides the Windows Azure platform as a PaaS offering.

  3. Software as a Service (SaaS)
    The SaaS model provides organizations with ready to use applications they use a combination of cloud-based compute and storage services.
    Microsoft provides various online services such as Microsoft business productivity online suite be PaaS and Microsoft Dynamics CRM online as a SaaS offering.

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