The 3rd REAMIT Symposium is intended to provide an opportunity for food producers, food supply chain companies (processing and logistics), local authorities, academics and digital technology providers to explore the problem of food waste and the solutions to achieve more sustainable food systems by reducing the waste. REAMIT is a large European project funded by the Interreg North-West Europe. The project aims to support reducing food waste using Internet of Things sensors and Big Data technologies. The symposium will showcase the achievements of the REAMIT projects so far and highlight the associated impact on three key sustainability areas: social, environmental and economic.