As a business executive and consultant, David has led and contributed to digital transformation initiatives of various scopes and sizes across several organizations. He specializes in defining and implementing strategies in a challenging digital world, from IT back-office to front-line business processes.He has seen what happens when strategies work and when they don't, and brings the benefits of these lessons to his writing and consulting work.Over the years, David has used ITIL as a practitioner, consultant, and business executive in companies that include Hewlett-Packard, BMC Software, and Forrester. He is also the lead editor of the ITIL® 4 Digital and IT Strategy book, as well as the co-author of the ITIL® v3 Service Operation book in 2007 and the ITIL® v3 Service Strategy book in 2011.