Cloud Computing: Why Businesses Are Embracing It
Cette année, les "Microsoft Tech Days", grande manifestation organisée par le groupe pour les professionnels du numérique, étaient placés sous le signe du cloud computing, aussi appelé "informatique dans le nuage". Un phénomène qui prend de plus en plus d'ampleur dans les entreprises, et que le grand public commence à connaître sous la forme de services de stockage à distance, ou encore de musique en streaming. Le cloud est sur toutes les lèvres, y compris celles d'Eric Besson qui a lancé en janvier un appel à projets autour du cloud dans le cadre du grand emprunt.
Cloud computing is a phrase used to describe a variety of computing concepts that involve a large number of computers connected through a real-time communication network such as the Internet. In science, cloud computing is a synonym for distributed computing over a network, and means the ability to run a program or application on many connected computers at the same time. The phrase also more commonly refers to network-based services, which appear to be provided by real server hardware, and are in fact served up by virtual hardware, simulated by software running on one or more real machines. Such virtual servers do not physically exist and can therefore be moved around and scaled up (or down) on the fly without affecting the end user - arguably, rather like a cloud. The popularity of the term can be attributed to its use in marketing to sell hosted services in the sense of application service provisioning that run client server software on a remote location. Advantages
Confusion Continues With Cloud Computing And SaaS Definitions Coincidence or just brilliance must be in the air as three esteemed industry colleagues, Phil Wainewright, Michael Cote, and James Governor, have both decided to clarify definitions on SaaS and Cloud within a few days of each other. In fact, this couldn’t be more timely as SaaS and Cloud enter into mainstream discussion with next gen CIO’s evaluating their apps strategies. A few common misconceptions often include: “That hosting thing is like SaaS”“Cloud, SaaS, all the same, we don’t own anything”“OnDemand is Cloud Computing”“ASP, Hosting, SaaS seems all the same”“It all costs the same so what does it matter to me?” Understanding flavors of Cloud
Above the Clouds
Michael Armbrust, Armando Fox, Rean Griffith, Anthony D. Joseph, Randy H. Katz, Andrew Konwinski, Gunho Lee, David A. Patterson, Ariel Rabkin, Ion Stoica and Matei Zaharia EECS Department University of California, Berkeley Technical Report No. Above the Clouds: A Berkeley View of Cloud Computing
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