  Rare decays of b-hadrons provide high sensitivity to New Physics effects.
Several deviations with respect to the Standard Model predictions have been
observed in recent years, leading to significant tensions in global fit
analyses. It is thus crucial to update the existing measurements and study new
decay modes to confirm the pattern. The latest results from LHCb and Belle on
radiative, semileptonic penguin, lepton universality and lepton flavour
violation decays are presented.
