The idea of this concept rests on the possibility of dispersing an information system infrastructure around the world. So, shared computing power and memory of computers and servers located anywhere in the world. These virtual resources are linked through the Internet and thus created a huge computer network and scalable. This computing can be dissociated from one approach to SOA (Service-Oriented Architecture).The computing power and storage of information is offered as an on-demand service, companies no longer need to own servers so it could cause a reduction in investment of computer equipment. In case of failure or incident, a virtual server can be moved almost instantly. The material is then shared.
The de-materialization of material adds another dimension. The engine power is optimized in the sense that if a deterioration of response time to a server, it is possible to switch dynamically to a physically more powerful machine, see if need to go through another provider.
The advantages for the user:
With this concept, information systems are considered a service, the user now has more concern for the operating systems. The agility and flexibility of this service allows the user to have full power and high availability of information it wishes in a timely manner without spending unnecessarily high costs in units of power and storage misused as we can do with computers owned enterprises.
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