Today AR / VR technologies can be incredibly helpful in enabling efficiency improvement in industrial processes and expanding your business. The adoption of XR digital platforms by companies represents an opportunity to increase the safety and efficiency of the activities carried out within industrial facilities and to reduce losses or accidents caused by unexpected events. In this session, we will focus on the latest technologies to support on-site training and processes for Industry 4.0. In particular, we will compare peculiarities and differences between virtual reality and augmented reality, concerning the different application fields.