Climate protection is becoming more important by the day, but what measures can be taken in IT to contribute an impactful share? Green IT is a process for creating environmentally friendly information and communications technology. It involves implementing IT products and services in a climate-friendly way to reduce the carbon footprint. This process involves a number of different methods, from eliminating unnecessary printing to reducing power consumption and using renewable energy in data centers. The energy efficiency of hardware plays an important role in this process.