The 13th International Conference on Exploring Service Science, IESS 2.3, will be organized by the Institute of Informational Service Science of the University of Geneva, on February 15-17, 2023 in Geneva, Switzerland. The IESS 2.3 conference will bring together academics and service practitioners in a collegial and stimulating environment. The IESS 2.3 edition has a special theme Service Science to ground Sustainable Development Goals (SDGs), which aims to enlighten the potential actions that can be achieved through Service Science.