Cloud computing is hot these days, with nearly every enterprise vendor using the term. In some cases, companies even use it to describe products they've sold for years. Oracle's Larry Ellison tried to resist -- a couple of years ago, he famously called the hype about cloud computing "complete gibberish" -- but now even Oracle has gotten on board. So what is cloud computing and why are businesses embracing it? What Is The Cloud? 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. Bernard Ourghanlian est directeur technique et sécurité de Microsoft France, qui possède aujourd'hui 31 000 clients à ses services cloud Windows Azure dans le monde. Pour Lexpansion.com, il explique ce qu'est le cloud, et à quoi ça sert.
In common usage, the term "the cloud" is essentially a metaphor for the Internet. Marketers have further popularized the phrase "in the cloud" to refer to software, platforms and infrastructure that are sold "as a service", i.e. remotely through the Internet. Typically, the seller has actual energy-consuming servers which host products and services from a remote location, so end-users don't have to; they can simply log on to the network without installing anything. The major models of cloud computing service are known as software as a service, platform as a service, and infrastructure as a service. These cloud services may be offered in a public, private or hybrid network. Google, Amazon, IBM, Oracle Cloud, Salesforce, Zoho and Microsoft Azure are some well-known cloud vendors.
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
We've been asked a few times about the relationship between clouds and peer-to-peer systems, and we wanted to take this opportunity to respond. Definitions We differentiate between peer-to-peer (p2p) techniques and p2p systems. The former refers to a set of techniques for building self-organizing distributed systems. These techniques are often useful in building datacenter-scale applications, including datacenter-scale applications that are hosted in the 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