Stuart Rance is a UK based ITSM & Information Security consultant, trainer and one of the authors of ITIL® 4, as well as author of the ITIL® 2011 edition of ITIL® Service Transition, a co-author of ITIL® Practitioner, and lead author of RESILIA™ Cyber Resilience Best Practice. As an expert in ITSM and Information security, he has worked for HP and globally consulted many clients in areas of IT service management and Information Security Management, to create service value for themselves and their customers. He is a Chartered Fellow of BCS (FBCS CITP), and a Certified Information Systems Security Professional (CISSP).