Recent decades have seen a significant increase in the number of decommissioning projects undertaken globally. Decommissioning technologies have advanced, driven by innovations in digitization and robotics, and the Systematic Approach to Training (SAT) methodology is now being applied to the decommissioning phase of all types of nuclear facilities. This publication provides practical information and examples of good practices in training personnel for decommissioning activities, based on Member States' experience, including guidance on the application of SAT methodology. The increasing use of digital and web?based tools to enhance competence development for implementation of decommissioning programmes is also discussed.