Performance Improvement of Software as a Service and Platform as a Service in Cloud Computing Solution

Abstract

The word cloud (also phrased as "the cloud") is used as a metaphor for "the Internet," so the phrase cloud computing means "a type of Internet-based computing," where different services -- such as servers, storage and applications -- are delivered to an organization's computers and devices through the Internet. Cloud computing that is providing computer resources as a service, is a technology Revolution offering flexible IT usage in a cost efficient and pay-per-use way. As for the evaluation of companies to whether which technology solution to use, it would be necessary to decide whether or not the evaluation of cloud computing would actually differ to the traditional way of IT outsourcing. In this paper, we compare PaaS and SaaS cloud computing solutions. Cloud computing provides three service models that provide different levels of control such as Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS). Each service model can be seen as a layer with IaaS at the base allowing full control of resources and storage, PaaS in the middle allowing development on an existing platform and finally, SaaS providing limited development opportunities but having appeal to end-users. Each layer provides different development and/or deployment opportunities that can be matched to the resource requirements of individuals and businesses.