The main objective of the LIFE Carbon Dairy project was to promote a milk production approach that is capable of reducing GHG emissions by 20% over 10 years. To achieve this goal, the partners aimed to: provide livestock farmers with tools to understand the issue so they can modify their technical choices to reduce GHG emissions and preserve carbon stored in soils; promote innovative livestock farming systems and associated practices; launch a national campaign to demonstrate to livestock farmers and agricultural advisers the feasibility of a 'climate roadmap' for milk production; and develop this 'roadmap' for milk production with carbon action plans adapted to each production system and a relevant partnership strategy implemented at the national level. The project aimed to conduct these actions in six representative dairy regions of France, with the involvement of 3 900 farms to enable a large-scale assessment of carbon impact.