  This writeup summarizes the main experimental studies of the strong
interaction, theoretically described by quantum chromodynamics (QCD), that were
presented during the ICHEP-2020 conference. The latest results, measured mostly
in p-p collisions at the LHC, are categorized in seven broad topics: (i)
Extractions of the strong coupling constant $\alpha_s(m_{\rm Z})$; (ii)
Comparison of data to fixed-order (N$^{\rm n}$LO) perturbative QCD
calculations; (iii) Determinations of parton distribution functions (PDFs);
(iv) Comparison of data to resummed (N$^{\rm n}$LL) pQCD calculations; (v)
Parton showering and jet substructure analyses; (vi) Semihard (double parton
interactions, multiparton interactions, hard diffraction), and soft (elastic
and diffractive) QCD scatterings; and (vii) Studies of parton hadronization in
$\rm e^+e^-$ and p-p collisions.
