From the individual to the largest organization, everyone today has to make investments in information technology. Making a good investment that will best satisfy all the necessary decision criteria requires a careful and inclusive analysis. "Information Technology Investment: Decision-Making Methodology is a textbook that will provide the understanding of methodologies available to aid in this area of complex, multi-criterion decision-making. It presents a detailed, step-by-step set of procedures and methodologies that readers can use immediately to improve their IT investment decision-making. Unique to this textbook are both financial investment models and more complex decision-making models from management science, so users can extend the analysis benefits to confirm and enhance the ideal IT investment choices.