The study of the bound states of heavy quarks in a QCD medium is an important foundation of heavy ion physics. Two major experiments at the Relativistic Heavy Ion Collider (PHENIX and STAR) and four major experiments at the Large Hadron Collider (ALICE, ATLAS, CMS, and LHCb) are all producing new results and refining previous observations with unprecedented precision and kinematic reach. In addition, measurements of the interactions of exotic heavy quark states with a QCD medium are becoming accessible for the first time. The proceedings discuss new results and remaining puzzles in quarkonium measurements, the first experimental results on exotic hadrons in the QCD medium, and give a brief outlook on future facilities.