Cloud service models
Cloud service models:- Cloud Computing is not binary. There are more than just two choices (“in the Cloud” or “not in the Cloud”). Your IT operation is most likely a very complex, hybrid environment. The decision of what to move “to the Cloud,” and when, is one of the most important (and complex) ones that you will make. You can move your infrastructure, your software platform, your software applications, your data, or any reasonable combination of these objects, to the Cloud. And, of course, you can choose to use a private Cloud, a public Cloud, or a combination of the two. illustrates three primary Cloud service models.
Cloud service models
1. Infrastructure as a Service (IaaS):- Provides basic storage and computing capabilities over the network. The capability provided to the consumer is to provision processing, storage, networks, and other fundamental computing resources where the consumer is able to deploy and run their preferred software, which can include operating systems and applications. These infrastructure resources are pooled, so as to flexibly handle the varied computing requirements of the multiple tenants of the service.
2. Platform as a Service (PaaS):- Provides not only the core components, such as servers and storage, but also provides a software platform on which higher-level software components and applications can be built. The consumer does not manage or control the underlying Cloud infrastructure including network, servers, operating systems or storage, but has control over the deployed applications and possibly application hosting environment configurations.
3. Software as a Service (SaaS):- A well-known model, having achieved significant success through vendors, such as Salesforce.com. In this model, applications are accessible through a browser, but the consumer does not manage or control the underlying Cloud infrastructure including network, servers, operating systems, storage, or even individual application capabilities.
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