Cloud Computing

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Recommended: Cloud Computing Cloud computing means storing and accessing data and programs over

1. Cloud Computing

Cloud computing is becoming one of the key words of the IT industry. The cloud is a metaphor for the Internet or infrastructure of communication between the architectural components, based on an abstraction that hides the complexity of infrastructure. Each part of this infrastructure is provided as a service and they are normally allocated in data centres, using hardware shared computing and storage (Buyya et al. 2009b). To use the service, users need only take their machines operating system, browser and Internet access. All computing resources are available on the Internet. Therefore, the user’s machinery does not need to have high computational resources, as a result reducing the cost in the acquisition of machinery. All hardware can be used to perform a task that is appropriate to its processing power. New hardware features can be added to increase processing power and work with existing resources.

The cloud computing model was developed with the goal of providing accessible and affordable services, to ensure characteristics such as availability and scalability. This model aims to provide essentially three benefits. The first benefit is to reduce the acquisition cost and composition of the entire infrastructure required to meet the needs of business, this infrastructure can be composed on demand with varied resources and less costly. The second is the flexibility that this model offers regarding the addition and exchange of computational resources, for this reason being able to climb at both the hardware and software resources to meet the needs of businesses and users. The final benefit is providing an abstraction and ease of access to users of these services. In this sense, service users do not need t...

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...dards and Technology. http://csrc.nist.gov/groups/SNS/cloud-computing.

- Vaquero L. M., Rodero-Merino L., Caceres J. and Lindner M. (2009). A break in the clouds: towards a cloud definition. ACM SIGCOMM Computer Communication Review Volume 39, Number 1, January 2009. http://www.systems.ethz.ch/education/past-courses/fs09/NIS/reading/cloud-definition.pdf

- Vecchiola C., Chu X., and Buyya R. (2009). Aneka: A Software Platform for.NET-based Cloud Computing. http://www.cloudbus.org/reports/AnekaCloudPlatform2009.pdf

- CSA 2009, Cloud Security Alliance Guidance Version 2.1, 2009, http://www.cloudsecurityalliance.org/

- Salesforce (2010). Salesforce. http://www.salesforce.com/.

- Robinson D. (2008). Amazon Web Services Made Simple: Learn how Amazon EC2, S3,SimpleDB and SQS Web Services enables you to reach business goals faster. Emereo Pty Ltd, London, UK.

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