ICT Sustainability is about how to assess, and reduce, the carbon footprint and materials used with computers and telecommunications. These are the notes for an award winning course on strategies for reducing the environmental impact of computers and how to use the Internet to make business more energy efficient. This book is designed to be used with an award winning on-line course for professionals, using mentored and collaborative learning techniques. These have been used in the Computer Professional Education Program of the Australian Computer Society (ACS) and the Graduate Studies Select program of the Australian National University (ANU).