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Cloud Computing |
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| Cloud computing is broken down into three segments: "applications," "platforms," and "infrastructure." Each segment serves a different purpose and offers different products for businesses and individuals around the world. In June 2009, a study conducted by VersionOne found that 41% of senior IT professionals actually don't know what cloud computing is and two-thirds of senior finance professionals are confused by the concept,<ref name=versionOneStudy>{{cite web|url=http://www.versionone.co.uk/news/cloud-of-confusion-amongst-it-professionals.php|title=Cloud Confusion Amongst IT Professionals|publisher=VersionOne|date=June 6, 2009}}</ref> highlighting the young nature of the technology. In Sept 2009, an Aberdeen Group study found that disciplined companies achieved on average an 18% reduction in their IT budget from cloud computing and a 16% reduction in data center power costs.<ref name=AberdeenStudy>{{cite web|url=http://www.aberdeen.com/summary/report/benchmark/6220-RA-cloud-computing-sustainability.asp|title=Business Adoption of Cloud Computing|publisher=AberdeenGroup|date=Sept 9, 2009}}</ref> | Cloud computing is broken down into three segments: "applications," "platforms," and "infrastructure." Each segment serves a different purpose and offers different products for businesses and individuals around the world. In June 2009, a study conducted by VersionOne found that 41% of senior IT professionals actually don't know what cloud computing is and two-thirds of senior finance professionals are confused by the concept,<ref name=versionOneStudy>{{cite web|url=http://www.versionone.co.uk/news/cloud-of-confusion-amongst-it-professionals.php|title=Cloud Confusion Amongst IT Professionals|publisher=VersionOne|date=June 6, 2009}}</ref> highlighting the young nature of the technology. In Sept 2009, an Aberdeen Group study found that disciplined companies achieved on average an 18% reduction in their IT budget from cloud computing and a 16% reduction in data center power costs.<ref name=AberdeenStudy>{{cite web|url=http://www.aberdeen.com/summary/report/benchmark/6220-RA-cloud-computing-sustainability.asp|title=Business Adoption of Cloud Computing|publisher=AberdeenGroup|date=Sept 9, 2009}}</ref> | ||
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| ==Cloud Computing Deployment Models== | ==Cloud Computing Deployment Models== | ||
| ===Public Cloud=== | ===Public Cloud=== | ||
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This article describes a concept which could impact a variety of companies, countries or industries. To see what companies and articles reference this concept page, click here. |
Cloud computing is a technology that uses the internet and central remote servers to maintain data and applications. Cloud computing allows consumers and businesses to use applications without installation and access their personal files at any computer with internet access. This technology allows for much more efficient computing by centralizing storage, memory, processing and bandwidth.
A simple example of cloud computing is Yahoo email or Gmail etc. You dont need a software or a server to use them. All a consumer would need is just an internet connection and you can start sending emails. The server and email management software is all on the cloud ( internet) and is totally managed by the cloud service provider Yahoo , Google etc. The consumer gets to use the software alone and enjoy the benefits. The analogy is , 'If you only need milk , would you buy a cow ?' All the users or consumers need is to get the benefits of using the software or hardware of the computer like sending emails etc. Just to get this benefit (milk) why should a consumer buy a (cow) software /hardware ?
Cloud computing is broken down into three segments: "applications," "platforms," and "infrastructure." Each segment serves a different purpose and offers different products for businesses and individuals around the world. In June 2009, a study conducted by VersionOne found that 41% of senior IT professionals actually don't know what cloud computing is and two-thirds of senior finance professionals are confused by the concept,[1] highlighting the young nature of the technology. In Sept 2009, an Aberdeen Group study found that disciplined companies achieved on average an 18% reduction in their IT budget from cloud computing and a 16% reduction in data center power costs.[2]
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Public cloud or external cloud describes cloud computing in the traditional mainstream sense, whereby resources are dynamically provisioned on a fine-grained, self-service basis over the Internet, via web applications/web services, from an off-site third-party provider who bills on a fine-grained utility computing basis.
A community cloud may be established where several organizations have similar requirements and seek to share infrastructure so as to realize some of the benefits of cloud computing. The costs are spread over fewer users than a public cloud (but more than a single tenant). This option offers a higher level of privacy, security, and/or policy compliance. In addition, it can be economically attractive as the resources (storage, workstations) utilized and shared in the community are already exploited and have reached their return of investment. Examples of community clouds include Google's Web App hosting service.
Hybrid cloud is also called hybrid delivery by the major vendors including HP, IBM, Oracle, VMware and Fujitsu who offer technology to manage the complexity in managing the performance, security and privacy concerns that results from the mixed delivery methods of IT services.
A hybrid storage cloud uses a combination of public and private storage clouds. Hybrid storage clouds are often useful for archiving and backup functions, allowing local data to be replicated to a public cloud.
Another perspective on deploying a web application in the cloud is using Hybrid Web Hosting, where the hosting infrastructure is a mix between cloud hosting and managed dedicated servers – this is most commonly achieved as part of a web cluster in which some of the nodes are running on real physical hardware and some are running on cloud server instances.
Two clouds that have been joined together are more correctly called a "combined cloud". A combined cloud environment consisting of multiple internal and/or external providers. By integrating multiple cloud services, users may be able to ease the transition to public cloud services while avoiding issues such as PCI compliance.
Douglas Parkhill first described the concept of a "private computer utility" in his 1966 book The Challenge of the Computer Utility. He based the idea on direct comparison with other industries (e.g., the electricity industry) and on the extensive use of hybrid supply models to balance and mitigate risks.
Some vendors have used the terms to describe offerings that emulate cloud computing on private networks. These (typically virtualization automation) products offer the ability to host applications or virtual machines in a company's own set of hosts. These provide the benefits of utility computing – shared hardware costs, the ability to recover from failure, and the ability to scale up or down depending upon demand.
So far the applications segment of cloud computing is the only segment that has proven useful as a 'business model.' [3] By running business applications over the internet from centralized servers rather than from on-site servers, companies can cut some serious costs. Furthermore, while avoiding maintenance costs, licensing costs and the costs of the hardware required to run servers on-site, companies are able to run applications much more efficiently from a computing standpoint.
On Demand software services come in a few different varieties which vary in their pricing scheme and how the software is delivered to the end users. In the past, the end-user would generally purchase a servers and is accessed by the end user over the internet. While this is the most common platform for On Demand software services, there are also some slightly different offerings which can be described as a hybrid of these two platforms. For instance, a program through which the end user pays a license fee, but then accesses the software over the internet from centralized servers is considered a hybrid service.
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Many of the companies that started out providing On Demand application services have developed platform services as well. The platform segment of cloud computing refers to products that are used to deploy internet. NetSuite, Amazon, Google, and Microsoft have also developed platforms that allow users to access applications from centralized servers.
In July 2008, HP, Yahoo! (YaHOO), and Intel (INTC) announced a joint cloud computing research project called the Cloud Computing Test Bed. The companies are jointly designing and producing the internet based testing utilizing HP hardware and Intel processors.[4]
The final segment in cloud computing, known as the infrastructure, is very much the backbone of the entire concept. Infrastructure vendors environments (such as Google gears) that allow users to build applications. Cloud storage, such as Amazon's S3, is also considered to be part of the infrastructure segment.
A paradigm shift to cloud computing will affect many different sub-categories in computer industry such as software companies, internet service providers (ISPs) and hardware manufacturers. While it is relatively easy to see how the main software and internet companies will be affected by such a shift, it is more difficult to predict how companies in the internet and hardware sectors will be affected.
=References= Cloud Computing and Wikileaks: Was Amazon’s action justified? [1] (Jan 3rd, 2011)
A webinar summarizing original research on real world results and best practices for Cloud Computing
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