2 What is Cloud Computing?

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Cloud computing is a phenomenon that is, consciously or unconsciously, used already by many. It includes the use of resources over the Internet, without the user knowing where these resources are exactly. On a daily basis, websites that are placed in the cloud are visited. What about email providers? Who actually knows where their email is located exactly?

What explains the rise of cloud computing? More and more technological innovations are occurring. By combining some of these innovations, cloud computing came into being (see Figure 2–1). The one-of-a-kind, worldwide, broadband Internet makes it possible to disconnect ...

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