Delivering computer solutions has changed radically over the past thirty years from centralised mainframe computing to distributed client-server solutions. The consumption of Information Technology and Services (IT&S) has been accelerated by advances in network performance and facilities, consumerisation, and most notably through the adoption of Internet services. Business applications have also gone through a similar change from bespoke in-house mainframe systems to packaged products, and more recently, to distributed application frameworks (as seen on the iPhone). The method of purchasing and contracting support for these systems has not kept pace with this complexity. Initially, customers with in-house operational and development capabilities purchased hardware, software and maintenance. In many cases this is now done on behalf of a customer by a systems integrator or outsourcer. Businesses however, have high expectations on IT and its ability to solve today’s problems quickly. This has led to a number of rapid development and project management methodologies, risk-reward arrangements and an erosion of the professional standards and quality of service once commonplace in the mainframe era. There is a clear disconnection between the static world of trustworthy IT solutions and the dynamic needs of today’s modern business environment. This drives the customer to question their “time to market” options, the cost legacy within the business and the value for money they receive from their IT solution. Customers believe they pay for IT functionality that they seldom use or appreciate. Their conclusion is that the IT services provided to the business do not meet the real day-to-day business challenges and often block the respon... ... middle of paper ... ...010 . Internet Ware Cloud Computing :Challenges Available at: http://arxiv.org/ftp/arxiv/papers/1004/1004.1746.pdf [Accessed 06 May 2011]. Goldworm, B & Skamarock, A. 2007. Blade Servers and Virtualization . Indiana : Wiley Publishing Hurwitz, J. Bloor, R. Kaufman, M. & Halper, F. , 2010. Cloud Computing for Dummies. Indiana: Wiley Publishing. IDC eXchange, "IT Cloud Services User Survey”[Online] (http://blogs.idc.com/ie/?p=210), [Accessed 01 July 2010]. IDC,” New IDC Research” [Online] http://www.idc.com/getdoc.jsp?containerId=prUS22393210 [Accessed 10 July 2011]. JUCC (n.d)” Cloud Computing newsletter for IT Professionals” [Online] http://www.istf.jucc.edu.hk/newsletter/IT_03/IT-3_Cloud_Computing.pdf [Accessed 05 September 2011]. Penfold, R. , 2010. An Introduction to Netbooks & Cloud Computing. Great Britain: Bernard Babani LTD.
Virtualization is a technology that creates an abstract version of a complete operating environment including a processor, memory, storage, network links, and a display entirely in software. Because the resulting runtime environment is completely software based, the software produces what’s called a virtual computer or a virtual machine (M.O., 2012). To simplify, virtualization is the process of running multiple virtual machines on a single physical machine. The virtual machines share the resources of one physical computer, and each virtual machine is its own environment.
Cloud Computing is an exciting concept because it can do much more than just executing and streaming your data from one place to another. It is successful through its flexibility to meet each company's needs. Cloud Computing is generally broken into three main categories b...
Hemalatha, S., & Manickachezian, R. (2012). Present and future of cloud computing: A collaborated survey report. International Journal of Recent Technology and Engineering, 1(2)
Rajkumar Buyya, Christian Vecchiola and S. Thamarai Selvi, Chapter 11 - Advanced Topics in Cloud Computing, In Mastering Cloud Computing, edited by Rajkumar Buyya, Christian Vecchiola and S. Thamarai Selvi, Morgan Kaufmann, Boston, 2013, Pages 373-427, ISBN 9780124114548, http://dx.doi.org/10.1016/B978-0-12-411454-8.00011-5.
Cloud computing has captured the attention and imagination of the business and IT worlds as of late. A general atmosphere of positive analysis surrounds the potential and future of cloud computing. “In May 2008, Merrill Lynch . . . estimated the cost advantages of Cloud Computing to be three to five times for business applications and more than five times for consumer applications” (Slabeva 2010, 47). An IDC forecast suggested a near three-fold growth of spending on cloud-related services from 2008 to 2012, attaining forty-two billion dollars (Slabeva 2010). Amid all these forecasts and positive predictions, it seems obvious that the cloud is here to stay, and that those who harness it correctly will have the opportunity to grow their business, seemingly almost indefinitely.
Cloud computing is a model for enabling convenient, on demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. This cloud model promotes availability and is composed of five essential characteristics, three service models, and four deployment models.
The term “Cloud” is very popular among entrepreneurs and marketers, but it simply means the wonders of Internet. Cloud computing shares the same concept as utility computing, in which all the computers are connected through a network and shared computing resources, such as computation, storage and services, over the network. Typically, there are three major models of cloud computing services on the market, which are software as a service (SaaS), platform as a service (PaaS), and infrastructure as a service (IaaS).
Once users register themselves in the cloud, they have an easy access to information and content using mobile devices from anywhere with an internet connection. The cloud can significantly lower the expenses for using Information Technology (IT). Traditional desktop software costs users and companies a lot in terms of finance and in adding up the licensing fee for multiple users. However, cloud computing providers share their complex infrastructures and servers, as well as offer to maintain and upgrade their services. Users only pay for the storage they use and they do not need to take additional efforts to maintain and upgrade their applications, which saves them money. There are one-time payment, pay-as-you-go and other scalable options available, which makes it very reasonable for individual users and the company in question. This is available at much cheaper rate. Plus, Services in the scalable systems of the clou...
In his 2003 article ‘IT Doesn’t Matter’, Nicholas Carr charts the evolution of Information Technology from the invention of the microprocessor in 1968 to present day omnipresence of IT solutions. His bone of contention with IT is not concerned with its widespread presence, but the magnified costs involved in the upkeep of IT infrastructure. He wants to bulldoze the myth that increased IT spending will culminate in higher returns and better profits. Acknowledging that though “Information technology has become the backbone of commerce” (Carr, 2003), he notes that its omnipresence works against its strategic advantage.
The fourth characteristic of cloud computing is broad network access. The applications that are available through cloud services are accessible through a variety of devices and locations, allowing users to access applications through various types of storage not limited to the local hard drive. Furthermore, with cloud computing, users can access applicat...
Cloud computing is here and basically every business, corporation, or organization is using it in some form. Learning and understanding the opportunities and risks that is interlinked with this technology can be very important. Cloud computing is a model for allowing convenient, on-demand network access to a shared collection of configurable computing resources. These resources included networks, storage, applications, servers, and services. It can be quickly provisioned and distributed with insignificant effort or interaction of service provider. Characteristics of cloud computing include rapid elasticity, broad network access, on demand self-service, measured service, and resource pooling.
Viswanathan, Priya. “Cloud Computing- Is it Really All That Beneficial?” Advantages and Disadvantages of Cloud Computing (2013): n. pag. Web.
Evolution of cloud computing over the past few years is potentially one of the major advances in the history of computing. Many computing applications are general-purpose in nature, and therefore offer tremendous economies of scale if their supply can be consolidated (Marston, Li, Bandyopadhyay, Zhang, & Ghalsasi, 2011).
Cloud computing is sort of like the first computers come full circle – in the early days of computing, users at terminals with no computing power to speak of made use of the number-crunching capabilities of mainframes in a shared fashion – in fact, the model of computer use was called “time-sharing.” As the personal computer grew in power and capabilities while also becoming a cheap...
Cloud computing is the progression of other computing technologies such as paral-lel computing, distributed computing, and grid computing. Its main principle is to disseminate the computing grind stones to distributed computers. Majority of us still use the PC’s and laptops to cache the data and files, sharing of data and files, and to send emails. If our pc’s diverse...