Within the framework of the project titled “Improving the Single Window Service System for Social Protection and Poverty Reduction in the OIC Countries” being implemented by the Ministry of Social Affairs of Indonesia, a three-day training program was conducted between 13-15 August 2018 in Padang city of Indonesia. 25 experts working on social assistance programs in different regions of Indonesia attended the program, which was organized in training of trainers (ToT) format. The training program focused on the use of single window service system in social assistance and increasing the efficiency in implementing the social protection and poverty reduction programs.