Study on Deployment Models & Application in Cloud Computing

"Cloud" computing : It's a relatively recent term, which builds after Decades of research in virtualization, distributed computing, utility computing, and more recently networking, web and software services. It implies a service oriented architecture, Cloud computing is architecture for providing computing services via the internet on demand and pay per use access to a pool of shared resources namely networks, storage, servers, services and applications, without physically acquiring them. So it saves time while being 'cost effective' for organizations. Cloud computing is a completely internet dependent technology where client data is stored and maintained in the data centre of a cloud provider like Google, Amazon, Salesforce.com and Microsoft etc. It implies a service for architecture, reduced information technology overhead, oriented the end-user, great flexibility, reduced total cost of ownership, on-demand services and many other things based on readings of 'cloud computing'. This paper tries to address, related research topics, challenges ahead and possible applications.