What is it? 

Cloud computing is the progression of several  technologies that together have vastly altered the landscape of typical medium and large organizational infrastructure, in much a similar way the www (World Wide Web) altered the way we communicate, do business and so many more aspects of day to day life, in so little time yet more than a decade ago. The clouds is essentially built upon the initial technologies and under pinning technologies behind the WWW, and have simply been made accessible publicly, the theory has been put into practice through the amalgamation of converged technologies.