This SFEN international conference is a unique opportunity to share worldwide experience in the field of Decommissioning Strategy and Program Development, Regulation Evolution, Development of New D&Ds’ Technologies, Initial Radiological State Characterization, Feedback & Challenges of D&D Complex Operations, Material and Radioactive Waste Management, Buildings and Sites Rehabilitation, Economic, Financial Aspects and Contracting of Dismantling Operations, Digital Contribution to D&D Operations.