In cloud computing, the data from internal servers is moved to an external computer network – a kind of cloud consisting of innumerable linked computers. It is entirely conceivable that the data for technical communication lies in one such cloud and is edited over the Internet. Different network types and services exist for this purpose. Anyone looking into this closely quickly comes up against questions regarding reliability and security.
Hardly any other topic has captivated the IT sector to this great an extent since the CeBIT 2011, as has cloud computing. According to the Experton Group, revenues of over Euro 1.1 billion were invested in technologies, services and consulting related to cloud computing in Germany in 2010 [1]. The research company expects an average annual growth of 40 percent till 2015.
A definition of cloud computing
The National Institute of Standards and Technology, NIST, defines cloud computing as “a model for smooth network access available on call to a common pool of configurable computing resources (e. g. networks, servers, memory, applications and services) that can be provided quickly and released with low management effort and minimal intervention by the service provider” [2]. The NIST definition details the attributes that the cloud solution must possess, and the basic models of use and ...
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