Rati Shukla. “Cloud Computing As an Elucidation to Geographical Information Systems (GIS): Methodologies, Services, Opportunities, Challenges and Deployment Techniques”. International Journal of Advanced Science and Technology, Vol. 29, no. 06, May 2020, pp. 4941 -51, http://sersc.org/journals/index.php/IJAST/article/view/19424.