The website agir-pour-bebe.fr, provided by Santé publique France and developed in collaboration with a community of parents, is based on the essential needs of young children. Designed for expectant and new parents, it offers information on the influences of various environments during pregnancy and early childhood: emotional, social, physical, and chemical environments, among others. All the content provided is scientifically validated. Currently designed for the prenatal period and up to when the baby is 4 months old, it will be expanded in 2021 to cover up to age 2 and will include video, audio, and other content to make it even more accessible. Interview with Nathalie Houzelle, health promotion project manager at Santé publique France, who coordinated the creation of this new tool.