Analysis of available cloud computing models to support cloud adoption decision process in an enterprise

Cloud Computing (CC) is a technology that surely brings innovations in today's business world, more and more companies around the world are widely incorporating this technology into their businesses. From a technical, as well as organizational point of view transferring enterprise IT to the Cloud is a complex task. Different factors have to be taken into consideration in order to make a right choice when moving IT services to the Cloud. The goal of this paper is to identify all factors that influence organization's decision to adopt Cloud and its return on investment (ROI). Cloud providers offer different types of services. In this paper we discuss advantages and disadvantages of different Cloud Computing services, with the goal of helping organizations fully understand Cloud adoption and its success potentials. General model for Cloud adoption decision process, in an enterprise, is presented and it consists of the key factors driving the organizational benefits when moving to the Cloud. Multi-criteria decision making methods are presented as one of the key factors.