BEST is SESAR Exploratory Research project focusing on a new way of data handling. By creating new data classification methodologies, it will enable the application of System-Wide Information Management (SWIM) one of the main results of SESAR. BEST will determine how semantic technologies can be used effectively to maximize the benefits of adopting SWIM, one of the major results of SESAR. SWIM offers an “information sharing” approach to ATM information management, and its adoption offers advantages for better situational awareness and information management. But the full benefits of SWIM can only be achieved if advanced support can be provided for developing smart SWIM-based applications that manage information effectively, and semantic technologies offer a promising way to do that. BEST identifies a set of focused research questions about how to exploit semantic technologies in a practical way in an ATM setting and will produce concrete results that help address these. This project has received funding from the SESAR Joint Undertaking under Grant Agreement No. 699298, under European Union’s Horizon 2020 Research and Innovation programme.