  QCD is an extensively developed and tested gauge theory, which models the
strong interactions in the high-energy regime. In this talk, I shall review the
considerable progress which has been achieved in the last few years in the most
actively studied QCD topics: Monte Carlo models, higher-order corrections, and
parton distribution functions. Thanks to that, QCD in the high-energy regime is
becoming more and more an essential precision toolkit to analyse Higgs and New
Physics scenarios at the LHC.
