Abstract
Cloud computing is Internet based development and use of computer technology. It is a style of computing in which dynamically scalable and often virtualized resources are provided as a service over the Internet. Users need not have knowledge of, expertise in, or control over the technology infrastructure "in the cloud" that supports them. Cloud computing is very popular paradigm in the field of computer science where heterogeneous services are delivered to an organization's computer through the Internet. It allows individuals and businesses to access the applications without installation and can access their personal files on any internet connected computer or laptop. Cloud computing means saving and accessing the data over the internet instead of local storage. In this paper, we have conducted a survey on the models of cloud environment, benefits and issues related to it.Â
Highlights
Cloud computing is a technology that uses the internet and central remote servers to maintain data and applications
Over the last few years, Cloud computing paradigm has witnessed an enormous shift towards its adoption and it has become a trend in the information technology space as it promises significant cost reductions and new business potential to its users and providers [1]
Cloud computing can be defined as “Cloud is a parallel and distributed computing system consisting of a collection of inter-connected and virtualized computers that are dynamically provisioned and presented as one or more unified computing resources based on service-level agreements (SLA) established through negotiation between the service provider and consumers”
Summary
Cloud computing is a technology that uses the internet and central remote servers to maintain data and applications. Some issues and challenges that its recently encountered with are: Load Balancing, Huge Energy Consumption by Cloud data centers, security and privacy of users' data, reliability and availability of cloud services, resource management, Service Level Agreement (SLA) issue, interoperability and portability, scalability and elasticity, virtualization etc These issues and challenges motivate researchers to explore further and develop new policies and algorithms to address them. 1) Software as a Service (SaaS):- The capability provided to the consumer is to use the some applications which is running on a cloud infrastructure. The consumer does not control the cloud infrastructure which includes network, and servers, all operating systems, and provides storages. The consumer does not manage or control the underlying cloud infrastructure but has control over operating systems, storage ,deployed application ,and possibly limited control of select networking components.
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