ROI stands for Return on Investment. It is a term used in business to evaluate the efficiency of an investment. ROI is a theoretical framework that helps businesses to decide whether their investments are worth the money or not. It helps them understand how much profit they will make from each investment and what it would take for them to break even. This framework has been widely used in many industries, including marketing, sales, and finance. The tool provides an effective way of understanding how much value your work generates as well as where you can improve your work in order to generate more value.