  Cross section measurements of top quark production in association with a
vector boson in proton-proton collisions at $\sqrt{s}=13\,\mathrm{TeV}$ at the
CERN LHC provide an important probe of the electroweak top quark couplings. In
this contribution, recent results of the ATLAS and CMS Collaborations for the
measurement of top quark pair and single top quark production in association
with a photon or a Z boson are presented. Both inclusive and differential cross
section measurements are performed, and the results are compared to
state-of-the-art predictions in the standard model of particle physics.
