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Learning Vaadin by Nicolas Frankel

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Cloud

What is dangerous with the word "cloud" nowadays is that it is a relatively young approach, so that not everyone necessarily has the same.

In order for certain terms to have the same meaning in the scope of this book, some definitions are in order.

Cloud offering levels

Currently, there is some agreement however, that there are three different service levels offered by clouds. This should be the shared understanding for our following work on clouds.

  1. Infrastructure as a Service (IaaS): In IaaS, only the hardware is dematerialized. In effect, this only affects system administrators and only in that they interact with a server whose location they don't know, as opposed to one they know of. The net gain here is a decrease on hardware costs as it ...

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