The offer of the cloud computing is characterized by three main elements:
- Infrastructure as a Service (IaaS), where the service offered by the provider of the cloud it is the very infrastructure of the โcloudโ, made up of power computing, storage and networking. The customer can then run their own software (including operating systems) on this infrastructure.
- Platform as a Service (Platform as a Service, or PaaS), where the service offered is the possibility of having a platform, provided by the supplier of the cloud, on which the customer can run his own programs.
- Software as a Service (Software as a Service, or SaaS), where the provider of the cloud prepares software for the customer and he pays only for the actual usage time of that software.
A problem that raises the cloud is that of the privacy and security of data collected, but this can only be solved with a view to a radical change in the philosophy that underlies our law.
Privacy and Ownership of Data
In the management of data collected online the problem of privacy clearly arises. The problem is not so much that i data collected may be public, as well as in the fact that someone could misuse them. The abuse of data collected sensitive, i.e. their illegal use, is what must be punished (for example, if of data collected the medical conditions of an employee were used to fire him, this would be improper and illegal use).
A second problem is the ownership of data collected: who is in control? This is a problem that for most users is irrelevant, because they share content that is already public. However, having data collected only on the net, the possession of one's own contents is not real; it would only be if we had an off-line copy.
There are currently two main models of software delivered to the market through cloud computing:
- model Google, which provides standard software,
- model Amazon, which provides mashup software to create customized software.
With its advantages, the cloud it also brings disadvantages: first of all, the migration of current systems to the cloud is very expensive (which is why for startups, the cloud, represents an advantage), but you also risk becoming prisoners of the supplier, in fact if you want to change supplier you must also move the data collected, therefore we need guarantees from the supplier on the possibility of using their own data collected in software provided by various vendors.
From a hardware point of view, the cloud computing seems an unlimited resource: the user no longer has the problem of sizing, moreover there is no longer the need to predict problems, but it is possible to concentrate only on the services to be provided and their quality.
In order to have Software as a Service, the software must have special requirements that enable it to be used by cloud computing. In particular, it must
- be modular (and ontologies work a lot in this area, especially platform-level ontology management services),
- be less integrated than current software,
- to separate data collected and programs.
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