Software As A Service With Cloud Computing

Abstract — Cloud Computing (CC) is a style of computing in which dynamically scalable and often virtualized resources are provided as a service over the Internet. Cloud is basically an extension to the object oriented programming concept of abstraction. It eliminates the complex working details from being visible to the users. What users can view is just an interface, which only involves receiving the inputs and providing the outputs. The process involved in generating the outputs is completely invisible. The cloud works on the concept of abstraction in a physical computing environment, which is done by simply hiding the actual processes from the users. In the cloud hosting environment, the data is placed over multiple servers in the cluster, though the credentials of the network connections are entirely hidden and the users cannot access anyone else’s data. The Cloud environment includes derivatives from the UNIX paradigm of having multiple elements, where every element is exceptional at any individual task, instead of having a single huge element that takes care of all the tasks. One type of cloud service, Software as a Service (SaaS) is commonly utilized and it provides several benefits to service consumers. To realize these benefits, it is essential to evaluate the quality of SaaS and manage relatively higher level of its quality based on the evaluation result. Hence, there is a high demand for devising a quality model to evaluate SaaS cloud services. Conventional frameworks do not effectively support SaaS-specific quality aspects such as reusability and accessibility. Software as a Service is a software delivery paradigm in which the software is hosted off-premise and delivered via web. The mode of payment follows a subscription model. SaaS helps organizations avoid capital expenditure and let them focus on their core business instead of support services. Using the SaaS architecture, one can proactively assess applications. Implementing SaaS also eliminates the time spent for upgrades and maintenance. The SaaS model is helping to build provides a new way for Service Providers, ISVs, and end-user customers to interact in a way that will drive additional demand for software applications. By finding a good SaaS provider, you can eliminate the worry about purchasing, installing and maintaining software or hardware, focus on managing and expanding your business.