Deployment

 

Cloud Deployment models

  • Private cloud
  • Public cloud
  • Hybrid cloud
  • Others
    • Community cloud
    • Distributed cloud
    • Multi cloud
    • Poly cloud
    • Big Data cloud
    • HPC cloud

Private cloud
Private cloud is cloud infrastructure operated solely for a single organization, whether managed internally or by a third party, and hosted either internally or externally.[73] Undertaking a private cloud project requires significant engagement to virtualize the business environment, and requires the organization to reevaluate decisions about existing resources. 

Public cloud
Cloud services are considered "public" when they are delivered over the public Internet, and they may be offered as a paid subscription, or free of charge.[101] Architecturally, there are few differences between public- and private-cloud services, but security concerns increase substantially when services (applications, storage, and other resources) are shared by multiple customers. Most public-cloud providers offer direct-connection services that allow customers to securely link their legacy data centers to their cloud-resident applications.

Hybrid cloud
Hybrid cloud is a composition of a public cloud and a private environment, such as a private cloud or on-premises resources,that remain distinct entities but are bound together, offering the benefits of multiple deployment models. Hybrid cloud can also mean the ability to connect collocation, managed and/or dedicated services with cloud resources. Gartner defines a hybrid cloud service as a cloud computing service that is composed of some combination of private, public and community cloud services, from different service providers. A hybrid cloud service crosses isolation and provider boundaries so that it can't be simply put in one category of private, public, or community cloud service. It allows one to extend either the capacity or the capability of a cloud service, by aggregation, integration or customization with another cloud service.

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