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.
7. “What cloud computing really means.” By Eric Knorr, Galen Gruman. Accessed. 21 November 2013. < http://www.infoworld.com/d/cloud-computing/what-cloud-computing-really-means-031 >
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.
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.
Cloud is the result of a decade research in the field of distributing computing , utility computing, virtualization , grid computing and more recently software, network services and web technology which is changeable evolution on demanding technology and services also as looking to the rapid growth of cloud computing which have changed the global computing infrastructure as well as the concept of computing resources toward cloud infrastructure. The important and interest of cloud computing increasing day by day and this technology receives more and more attention in the world (Jain, 2014) the mostly widely used definition of cloud computing is introduced by NIST “as a model for enabling a convenient on demand network access
[p12] Vaquero L.M., Rodero-Merino L, Caceres J., Lindner M. A break in the clouds: towards a cloud definition. In: ACMSIGCOMM, editor. Computer communication review 2009. New York: ACM Press; 2009. pp. 50–5. (for grid virtualization)
Since the adoption of information technology (IT), the complexity of corporate IT environments has been growing steadily. In practice, IT complexity growth has given rise to various problems. First of all, IT management has become more and more difficult thereby increasing operational risks. Beyond that, IT complexity has also fueled maintenance and operating costs. As a consequence, there is often a perceived deviation between a firm’s business strategy and the information systems (IS) available to support this strategy.
The evolution of technologies often changes the strategic relevance of IT service to a firm. From the customer’s viewpoint, assigning a commodity service to an outsider is very attractive if the price is right. Delegating a firm’s service differentiator is another matter. The customer that made the original decision on efficiency will judge it differently if using effectiveness criteria later.
In the 1950s Cloud computing started with mainframe computing, where multiple users were able to access a central computer by using a dumb terminal, which had only one function, and that was to provide access to the mainframe. In the 1970s, the concept of virtual machines was created, by using the virtual machine technology it was possible to used more than one operating system simultaneously in a secluded environment. In 1993 cloud computing reached its first milestone with e-mail, which is a method of exchanging information/ data or digital messages through a computer network of the internet. Emails were originally a text based form of communication only, these days’ files like multimedia, images or PDFs can be attached. Today, cloud computing is a part of our everyday lives, we still use it to email, and now we use a more perfected cloud system to store applications or files and can access them anywhere and anytime.
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...
During the past years a new solution appeared in the IT field, Cloud computing, and it is Impossible to overlook it, in light of the fact that Cloud computing permits organizations to outsource information, electronically mail, folders and different applications through virtual stages through the medium of servers
ISTF, JUCC. "Background of Cloud Computing." Network Computing. Computing Services Centre, 27 06 2011. Web. 2 Apr 2014.
Technology is now central to successful businesses. It has enabled systematic storage of operational & managerial data. However, businesses face challenges with this. Each Employee working in different location has to manage individual data. Also, managing complex IT infrastructure takes away the IT staff from the important projects.
Velte, A. Velte, J. T. and Elsenpeter, C. R., 2009. Cloud computing, a practical approach. London: McGraw-Hill Prof Med/Tech.
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...
In cloud computing, the word cloud is used as a metaphor for “the internet”. So the cloud computing means “a type of internet-based computing”, where different services such as servers, storage and applications are delivered to an organization’s computers and devices through the internet.