(Left) Pseudorapidity density of charged particles in 0--5$\%$ central \PbPb\ collisions , NSD \pPb\ collisions , and INEL \pp\ collisions at \mbox{\sqrtSnn = 5.02 TeV}  in ALICE. Dashed lines represent EPOS 3.4 model calculations , available only for pp and \PbPb\ collisions at this energy and PYTHIA 8.3 , available for all collision systems Error bars represent systematic uncertainties on data, statistical uncertainties are negligible. (Right) Ratio between EPOS 3.4 and PYTHIA 8.3 model calculations relative to \PbPb\ (top), \pPb\ (middle), and \pp\ (bottom) data. Shaded bands represent the relative systematic uncertainties on data.