Eurostrings is an annual international conference, one of the main events of the European community in String theory, Quantum field theory, and Quantum gravity, gathering 150-200 participants each year. Previous editions of the Eurostrings conference include London 2018, Milan 2017, Cambridge 2015. Conference topics range from fundamental and mathematical aspects of String theory, Quantum gravity and Quantum field theory to more applied developments: quantum black holes, effective field theory, holography, scattering amplitudes, and integrability.