The term cloud computing is new to many people. The basic concept of cloud computing has been revealed in 1960 when John Mccarthy predicted that “computation may someday be organized as public utility”. And now after about 50 years of those words we are about to see that prediction come true. It is estimated that by 2020 the majority of people and corporations will be using cloud computing exclusively. Cloud computing is expected to outnumber desktop computing in the next decade. There can’t be a complete change, but there will be a hybrid system with the majority of applications being






