The Alternative Food Network (RAA) works collaboratively from the production to the consumption of healthy food from the countryside to the city, unlike the Industrial Agrifood System. Through the RRA, socio-productive inclusion occurs in the promotion of Territorial Agro-Food Systems (SAT) with emphasis on ecological practices, social technologies and Short Circuits (CC). This cooperation network leads to the promotion of healthy eating with Sovereignty and Food and Nutrition Security (SSAN). In this sense, the objective of the research was to analyze the execution of the FIAV Virtual Agroecological Interinstitutional Fair during the year 2021 as a strategy to promote healthy eating, through the methodology of existential/integral action research that started due to the COVID-19 pandemic. The methodology chosen was the existential/integral action research, carried out in 2021 and 2022 with the family farmers involved. FIAV demonstrated the potential of the agroecosystems in the municipalities of Vianópolis, Silvânia, Campestre and Palmeiras (Goiás-Brasil) in offering regional, seasonal foods with nutritional value and produced with ecological practices by family farmers. There were ten editions held at the Federal Institute of Goiás (IFG), the Federal Institute of Goiás (IF Goiano) and the Federal University of Goiás (UFG). FIAV promotes healthy eating with SSAN, however, among the challenges encountered, there is that of family farmers resisting the socio-environmental impacts of the Industrial Agrifood System.