Business managers, management consultants and researchers regularly question whether and how the contribution of IT to business performance can be measured. This book contributes to the art and science of the expost valuation of IT, by posing and answering key management questions, offering insights into the value of IT once it has been developed, implemented and used. Measuring the Value of Information Technology targets business managers, IT managers, business students and researchers and will enable its readers to systematically, effectively and consistently measure the value of Information Technology.