International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Cloud computing is a way to run IT industry in a better way. Instead of running applications themselves, these business organizations run it on a shared data center. The term "Cloud" is borrowed from telephony after introduction of concept of VPN, from those telecommunications companies, who until 1990s primarily offered point-to-point dedicated data circuits, began to offer Virtual private network services with almost same quality of service but it costs very less. Cloud computing stretches this boundary, it covers servers and network infrastructure also. Cloud computing claims to reduce cost greatly and capital expenditure is reduced to operational expenditure. The independence provided in device and location enable users to access systems through a web browser unconcerned of user location or which device they are using.