  Symplectic resolutions are an exciting new frontier of research in
representation theory. One of the most fascinating aspects of this study is
symplectic duality: the observation that these resolutions come in pairs with
matching properties. The Coulomb branch construction allows us to produce and
study many of these dual pairs. These notes survey much recent work in this
area including quantization, categorification, and enumerative geometry. We
particularly focus on ADE quiver varieties and affine Grassmannian slices.
