In recent years, remarkable progress has been made in recasting hydrodynamics as a modern effective field theory (EFT), encompassing both quantum and statistical effects. This has required, in turn, advances in our understanding of the Schwinger-Keldysh formalism, which is necessary to study out-of-equilibrium systems. The goal of this workshop is to bring together leading experts to arrive at a synthesis of these recent results and reconcile different approaches in a unique framework.