We present recent results based on the IR-improvement of unintegrable singularities in the infrared regime via amplitude-based resummation in $QED \times QCD \subset SU(2)_L \times U_1 \times SU(3)_c$. In the context of precision LHC/FCC physics, we focus on specific examples, such as the removal of QED contamination in PDF’s evolved from data at $Q_0^2\sim 2 GeV^2$ and used in the evaluating precision observables in $pp\rightarrow Z + X \rightarrow \ell\bar\ell + X’$, in which we discuss new results and new issues.