This paper summarizes recent experimental results related to heavyion collisions from the CMS Collaboration. Global features, like charged particle and transverse-energy density as a function of pseudorapidity, as well as correlations, elliptic flow, and the production of hard probes like isolated photons, Z and W bosons, jets, J/ψ and Υ particles will be presented. Many of these observations
are possible for the first time at the LHC, and the CMS experimental apparatus is well suited to conduct detailed studies of hard probes in the recently collected
high-luminosity Pb + Pb data
