Software as a Service in Cloud Computing
Software as a Service (SaaS) is one of the delivery models of cloud computing in which service are provided by the service providers and client make use of it through Internet. Here the authors present a SaaS in pcloud. pcloud is a distributed system which contains a number of cooperated nodes. In pcloud, distribute the programming software to a number of nodes so that queries can be executed in parallel manner. In this distributed system, communication overhead between the co-operated nodes is very low. Programming code is send as a user queries to pcloud where it is processed and retrieved through PIR protocol.