  Recent jet and jet substructure measurements at the LHC, and of
machine-learning-based tagging techniques are presented using proton-proton
collision data collected by the ATLAS and CMS experiments at CERN's Large
Hadron Collider. These measurements are crucial for precise tests of
electroweak and pQCD calculations and searches for physics beyond the Standard
Model. The measurements are compared with several Monte Carlo event generator
predictions which provide valuable input to the tuning of perturbative and
non-perturbative models and to constraining model parameters of advanced
parton-shower Monte Carlo programs.
