Increasingly we hear about Cloud Computing, yet another "tag" in the Web 2.0.
What
delay was more marketing than technical, the definition can not be vague and imprecise that, in essence it is an immediate consequence of virtualization and relocation of the physical components of the ICT infrastructure .
Essentially all components physical infrastructure (CPU, storage) are virtualized and made available to the user as on demand services over the network, where and how these services are provided is irrelevant.
implementations
There are many interpretations of this approach, from the lower level until the delivery of complete applications follow the model as Software-as Service (SaaS)
Amazon Elastic Computing Cloud allows you to define and instantiate virtual machine (AMD Opteron - compatible) running Linux.
Interesting images from the possibility of pre-configured and customizable
then Google App Engine offers a platform for the development of higher level than Amazon, in essence is like having an Application Server (for now only supports the Python language) with a limited set of APIs.
Google Apps would be the version of "Cloud" of Office (Microsoft vs LiveOffice), and is the most "high" and in fact coincides with the approach SaaS.
Ulteo Cloud and instead are oriented solutions that enable clients to virtualize their workstations. In practice you access a remote desktop (through a kind of Terminal Server) that provides the feature "classic" of personal computing: Office Suite, Mail. The value added is the portability of their work environment (accessible from any browser and in the case of cloud also mobile) and the ability to share your workspace with other users.
The consequences for ICT
For a few hours, hard to believe that the level of ICT Enterprise can migrate to Amazon EC2 or similar, but tend to model the "Cloud" will come to fruition for its effectiveness and efficiency: I tested the service in person and I was able to boot my linux virtual server in minutes, already looking set up and ready, all at a cost that is almost irrelevant.
for small and medium enterprises but the benefits could be enormous: even the small company can have the performance (in terms of reliability and scalability) of a typical data center-class Enterprise, more geographically distributed, and then "disaster-proof".
be noted, however ( source Amazon) which is already extensive maggiornaza of about 60000 people EC2 are companies that use these enterprise-level resources such as infrastructure projects that require fast switching times.
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