Costing/Charging Model for an IT Network

The main aim of this research is to review the pricing and charging models thereby developing mathematical representations which will aid in evaluating the cost/performance ratio of IT in an organisation. The work presented herein describes the theory and motives behind these models and presents some case studies where the companies are shown to have benefited from studying closely the cost/performance ratio of IT. These studies are commonly termed as total cost of ownership (TCO) and return on investment (ROI) or in other words cost/performance modelling. Chapter 1 briefly provides a general understanding of TCO/ROI concept whilst Chapter 2 outlines review of various techniques employed for developing these models. Case studies of several organisations employing these TCO/ROI techniques are presented in Chapter 3 where a comparison is made between the different ways in which Tesco and Sainsbury implemented TCO/ROI. The new mathematical models proposed by the author and their merits are presented in Chapter 4 which also includes factors affecting the overall performance. The implementation of the proposed model as applied to a typical school is outlined in Chapter 5.School of Computing, Communications and Electronic