Heavy-flavour production in small systems and evolution with multiplicity with ALICE

In this report, highlights on the multiplicity-dependent measurements of heavy-flavour hadrons performed by the ALICE experiment, are presented. The heavy-flavour baryon-to-meson Λc0/D0$\left({{{\Lambda_{\rm{c}}^ + } \mathord{\left/ {\vphantom {{\Lambda_{\rm{c}}^ + } {{{\rm{D}}^0}}}} \right. \kern-\nulldelimiterspace} {{{\rm{D}}^0}}}} \right)$(Λc+/D0) and strange-to-non-strange D meson DS+/D0$\left({{{{\rm{D}}_{\rm{S}}^ + } \mathord{\left/ {\vphantom {{{\rm{D}}_{\rm{S}}^ + } {{{\rm{D}}^0}}}} \right. \kern-\nulldelimiterspace} {{{\rm{D}}^0}}}} \right)$(DS+/D0) ratios in different charged-particle multiplicity intervals are discussed. Recent measurements of heavy-flavour self-normalised yields as a function of the self-normalised charged-particle multiplicity in pp collisions at √S = 13$\sqrt s = 13$s=13 TeV are also reported. Measurement of jets containing heavy-flavour hadrons in pp and p–Pb collisions at √SNN = 5.02 TeV$\sqrt {{s_{{\rm{NN}}}}} = 5.02\,{\rm{TeV}}$sNN=5.02 TeV and the recent measurements of azimuthal correlations of heavy-flavour hadron decay electrons and charged hadrons in pp collisions at √S = 5.02 TeV$\sqrt s = 5.02\,{\rm{TeV}}$s=5.02 TeV are presented.