ABSTRACT
Cloud computing is dened as the sharing of computing resources via the Internet. It is a borderline idea of service sharing and infrastructure convergence. The main advantage of this cloud concept is its capability of dynamically sharing and reallocating the resources among an n number of users concurrently. For example, the Internet giant Google provides a large number of cloud services for storing and managing data. Some wonderful applications in this context are Google Docs and Spreadsheet offered by Google Drive cloud service. Although Google Drive is basically a storage service, its service becomes interactive as the docs and spreadsheet applications are incorporated. The user can edit documents, perform mathematical calculations, generate graphs and charts, etc. The signicance of this service is that it allows users to create and edit documents online, collaborating with other users from computers, mobile phones, tablets, and many more.
