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Cloud computing is a set of technologies, allows you to perform all the operations that we perform on a regular computer, using the resources of the provider. To understand the envisaged changes made by cloud computing, first one must understand what we're talking about. Like all new technologies, even the term cloud computing is often used without understanding the full meaning. Before we discuss the advantages and disadvantages of the new technology, let's give a complete definition for the benefit of those who were not practical in the end. Cloud computing is a set of technologies, typically offered by a provider, which allow you to perform all the operations that we perform on a regular computer using the software and hardware resources of the provider. When we work on our computer execute the software on the processor (CPU) local, our operating system and our hard disk. When we use cloud computing IaaS, we can perform the same operations, but the workload moves to the remote processor (the CPU of a remote machine), which run remote applications in the context of an operating system, which is also remote. Finally, all data are stored on the hard drives of the provider (remote), almost always through a distributed architecture. Great examples can be our tutorials on how to use Rackspace Cloud Server as Remote Desktop and using the same method, we can use it for NeuroDebian. We can use multiple 30GB servers together, load balance properly, use FreeBSD or OpenSuse for more stable setup for accessing it just using the browser or from a mobile device.
Cloud Computing : How it is Changing the Era of Dedicated Servers and Colocation The example seen is perhaps the most complete, but there are of course a myriad of different combinations. Cloud computing allows the use of remote resources in a partial way. For example, we limit ourselves to store data remotely, using a system of online storage or we could use only a particular application without installing it on your computer, in this case we speak of distributed software as a service rather than a product (SaaS: Software as a Service). There are many ways to benefit from cloud computing. From a point of view, even the grid computing, the practice of sharing a pool of processors to process large amounts of data over the network, is one of the first applications of cloud computing. This observation leads to a rather controversial question: Is Cloud computing is really a new technology or as argued by Richard Stallman, is only commercial invention, ie, a term coined to beautify an existing product? From the technical point of view we have to agree with those who say that cloud computing is nothing new. After all, it extends the concept of terminal or thin-client, which has existed since the dawn of computing. Even the webmail is an example of cloud computing, which is at least 10 years old. To say that cloud computing is just a new way to label a methodology for distributed architecture of the software, however, is limiting. What matters is not the concept behind the technology, but its mode of use. Let's take an example, consider another technology: the internal combustion engine. This technology has existed for over a century, so no one can say that the car is a new invention, but not for this reason we can say that the way you drive, use and exploit the car has not changed. Although the technology is basically the same, probably no one would find comfortable driving a car like Henry Ford originally designed.
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