• M.ABINAYA

Cloud computing is a set of IT services that are provided to a customer over a network on a leased basis and with the ability to scale up or down their service requirements. Usually Cloud Computing services are delivered by a third party provider who owns the infrastructure. Many industries, such as banking, healthcare and education are moving towards the cloud due to the efficiency of services provided by the pay-per-use pattern based on the resources. This research paper presents what cloud computing is, the various cloud models and the overview of the cloud computing architecture. This research paper also analyzes the key research challenges present in cloud computing which offers comparison of grid and cloud computing, finally this paper also present recent enhancement of cloud technology.

A SURVEY ON LAYERS, CHALLENGES AND TRENDS IN CLOUD COMPUTING

"A SURVEY ON LAYERS, CHALLENGES AND TRENDS IN CLOUD COMPUTING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.384-388, March-2019, Available :http://www.jetir.org/papers/JETIRAQ06078.pdf

"A SURVEY ON LAYERS, CHALLENGES AND TRENDS IN CLOUD COMPUTING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp384-388, March-2019, Available at : http://www.jetir.org/papers/JETIRAQ06078.pdf