The cloud can be imagined as a huge network of computers. The details of this network remainhidden from the users. Users can log-in to the cloud from their individual computing devices(as shown in Figure 3.3), but they never know in which systems they are actually working.They even do not know where their data is stored. To the individual users, the cloud is seen asa single entity.Cloud computing environment can be described by usingSun Microsystems’s popularslogan during mid 1980s, which said “The network is the computer”. This philosophy cangenerate higher computing power by combining power of multiple computers.

Computing cloud comprises of a vast network of computers but users visualize the entirething as a single entity.

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