The seminar organized by ANINF (Agence Nationale des Infrastructures Numériques et des Fréquences gabonaises), l’INC (National mapping institute) and IGN France International was a success. More than 100 participants attended the conference. In the perspective of the implementation at a national scale of the National Geomatic Plan (PNG), the objective of the meeting was to present the main steps and the added value of implementing a National Spatial Data Infrastructure.