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Turning to Cloud Computing

ArticleID 128  
Writer Isaac Thuku
Category Personal Article


Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources which are networks, servers, storage, applications and services that can be rapidly provisioned and released with minimal effort or service provider interaction. There are different types of cloud computing in information and communication technology. Public cloud infrastructure is made available to the general public or a large industry group and is owned by an organization selling cloud services. Private cloud infrastructure is operated solely for an organization and may be managed by the organization or a third party that exists on premise or off premise.


Community cloud infrastructure is shared by several organizations and supports a specific community that has shared concerns such as mission, security requirements and policy and compliance considerations. It may be managed by the organizations or a third party and may also exist on premise or off premise. Hybrid cloud infrastructure is a composition of two or more clouds, private, community or public that remains unique entities but is bound together by standardized or proprietary technology that enables data and application portability.

Cloud computing customers do not generally own the physical infrastructure serving as host to the software platform in question. They avoid capital expenditure by renting usage from a third-party provider. The entire onus lies on the service provider who owns the huge scalable and variable host of infrastructure, software and bundle of other services.

Cloud computing consumers utilize resources as a service and pay only for resources that they use. Many computing offerings employ the utility computing model, which is analogous to how traditional utility services like electricity are consumed, while others bill on a subscription basis. Cloud computing is emerging at the convergence of three major trends. Service orientation, virtualization and standardization of computing through the internet. It enables users and developers to utilize services without knowledge of technology and infrastructure that supports them.

Software as a Service (SaaS) is a model of software development where an application is hosted as a service provided customers across the internet. SaaS is basically used to refer to business software other than consumer software which falls under Web 2.0.Infrastructure as a Service (IaaS) is the delivery of the computing infrastructure as a fully outsourced service.

Companies that provide infrastructure services are Google, IBM and Amazon.com. Platform as a Service (PaaS) offers a development platform for developers. End users write their own code and the PaaS provider uploads that code and present s it on the web. SalesForce.com’s Force.com is an example of PaaS.

Cloud computing frees up the user from any further licensing of the software or from upgrading and maintenance. All services are provided by the service providers.

Cloud computing reduces run time and response time. With cloud computing you can use 1000 servers to accomplish a task in 1/1000 the time that a single server would require.

Clod computing has a lower cost of entry. This is because the infrastructure is rented and not purchased. Through this the cost is controlled and the capital investment can go down to zero. This works out in minimizing infrastructure risk.

Cloud computing can aide in increasing the speed of innovation in a business venture. The low cost of entry to new markets helps to level the playing field thus allowing start-up companies to deploy new products quickly and at low costs.

Turning to Cloud Computing
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