The mysteries of ROI revealed
ROI--or return on investment--is a much discussed term. But too often, project managers lack the understanding needed to really achieve it. This article discusses the concept of ROI. In doing so, it defines the concept and lists four types of incremental financial benefits and four types of incremental expenses. It also explains the three key metrics used to gauge ROI: net present value (NPV), internal rate of return (IRR), and payback period.