International Journal of Scientific & Technology Research
The cloud computing concept has been evolving for more than 40 years. Cloud computing is an on demand computing in which dynamically scalable and often virtualized resources are provided as a service over the Internet. The cloud computing services are delivered through Software as a Service (SaaS), Platform as a Service (PaaS) and Infrastructure as a Service (IaaS). Cloud computing moves the application software and databases to the large data centers, where the management of the data and services are provided by cloud service providers. The common data security concerns are securing data in transit and at rest, access control and data separation.