期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2012
卷号：3
期号：5
页码：4988-4996
出版社：TechScience Publications
摘要：In a remarkably short time, cloud computing has emerged as a hugely important evolution in the way that businesses and individuals consume and operate computing. It’s a fundamental shift to an operational model in which applications don’t live out their lives on a specific piece of hardware and in which resources are more flexibly deployed than was the historical norm. It’s also a fundamental shift to a development and consumption model that replaces hardwired, proprietary connections among software components and the consumers of those components with lightweight web services and web-based software access. In short, cloud computing refers to a convergence of technologies and trends that are making IT infrastructures and applications more dynamic, more modular, and more consumable. That’s a big change that has implications that touch on just about every aspect of computing. For end-user customers, cloud computing provides the means to ramp up new services or reallocate computing resources rapidly, based on business needs. It means having the ability to run an application either on-premises or off-premises (or a combination of the two) based on cost, capacity requirements, and other factors. This paper strives to compare and contrast Cloud Computing with Grid Computing from various angles and give insights into the essential characteristics of cloud computing. And also to make sense of it all for readers that haven’t been deeply involved in the details of cloud computing as it has rapidly evolved. It lays out the characteristics of a cloud computing infrastructure. It describes the forms that cloud computing can take and how different types of technology providers and consumers of technology relate to each other. The paper aims to provide a means of understanding the model and exploring options available for complementing your technology and infrastructure needs.
