Explains what green IT is and examines the significance of green IT.• Discusses environmental concerns, global warming and the principles of sustainable development.• Examines the environmental impacts of IT.• Describes the three key dimensions of green IT and explains green IT 1.0 and 2.0.• Presents a holistic approach to greening IT.• Discusses how data centres, cloud computing, storage systems, software and networks can be made greener. • Highlights how IT could help businesses in their environmental initiatives and reduce their carbon emissions. • Outlines enterprise green IT strategy.