Cloud computing

Cloud computing Cloud computing  is the on-demand availability of  computer   system resources , especially  data storage  and  computing power , without direct active management by the user. The term is generally used to describe data centers available to many users over the  Internet . Large clouds, predominant today, often have functions distributed over multiple locations from central servers. If the connection to the user is relatively close, it may be designated an  edge server . Clouds may be limited to a single organization (enterprise clouds [1] [2] ), be available to many organizations (public cloud), or a combination of both ( hybrid cloud ). Cloud computing relies on sharing of resources to achieve coherence and  economies of scale . Advocates of public and hybrid clouds note that cloud computing allows companies to avoid or minimize up-front  IT infrastructure costs. Proponents also claim that cloud computing allo...