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The Cloud, The Fake Cloud And Cloud Service

Finally, it is a matter of making a fate of inaccuracies that fall into two types: first, those that are the subsistence of certain myths about what constitutes cloud computing; secondly, the confusion between the cloud itself and cloud services.

Persistent myths

Among these myths, there is the idea that the cloud as such would be a set of hardware-based services, providing storage, networking and computing capabilities, while the term does not refer to the present case. an abstraction that can not, as is, be owned, sold or purchased.

Another abuse consists in considering that, in the field of IT, everything must absolutely join the Cloud today, as we face, and will be faced again for at least ten years, with a hybrid model, still in ripening phase.

Third confusion, which considers that any remote computing service or hosting solution “out-of-wall” is a cloud computing, while the latter is both a model of delivery and consumption of services, defined by a set of ‘very special attributes.

Finally, it is wrong to think that cloud computing allows businesses and individuals to reduce their expenses by definition: it will only allow it, on the condition that it not be used simply to replicate. the same, outside the walls, systems, and structures hitherto hosted in the company, and subject to a balanced redefinition of revenues between the various players that will contribute to the development of cloud computing.

But if we look at the prices of some hosted services, such as email, for example, it is clear that the scale effect of the Cloud is playing out full. For example, moving from a datacenter of a few thousand servers to a few tens of thousands of servers (see James Hamilton, Internet-Scale Service Efficiency, Large Scale Distributed Systems and Middleware (LADIS) Workshop Sept’08) makes it possible to reduce network, storage and operating costs by a factor of between 5.7 and 7.1.

Cloud or related service?

As mentioned earlier, some services sharing with Cloud computing some common features continue to be considered, wrongly, as cloud computing.

For example, services defined both by an underlying infrastructure, which the user does not have to worry about, a high capacity elasticity and a multi-tenant character, but which are not governed by a pay logic -per-use, should not be confused with cloud computing.

This is in a sense the case of many email services (such as Yahoo Hotmail, or Gmail) or portals offering free of charge a series of online applications, such as Zoho, whose offer includes an e-mail, a text editor , a spreadsheet, a wiki, a chat, a web conference system, etc.

In the same way, one can imagine solutions offering elasticity, abstraction, and pay-per-use but without multi locative criteria, or three criteria common to cloud computing except for the fourth one.


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