Innovative grass-based beef production systems based on agroecological principles of environmental, economic, and social sustainability can help address the challenges faced by the European beef sector and citizens' concerns about the sustainability of the current beef production and consumption levels. When managed correctly, grass-based beef production systems improve biodiversity, capture carbon, sustain the soil microbiome, and structure the landscape, preventing erosion and forest fires. This report presents the findings and conclusions of the Agriculture and Innovation focus group (EIP-AGRI) on sustainable beef production. It focuses on providing answers to the question, "How can grass-based beef production systems, based on agroecology principles, remain sustainable?"