  Objects which are only subject to the electroweak force are an ideal probe of
QCD in high density and temperature environments as they carry information
about the conditions during their production out of the QGP without interacting
with it. Thus they can be used to characterize the initial state as well as
several properties of the QGP and its evolution. Within this article the recent
results regarding these electroweak probes presented at the 9$^{th}$ Hard
Probes Conference (Aix-les-Bains, France, 2018) will be summarized. In
particular the following questions will be addressed: Can we determine the
necessary energy and particle density for the QGP creation using
electromagnetic probes? Can we use light-by-light scattering in heavy-ion
collisions to do precision tests of QED and measure the magnetic field of the
QGP? How are quark jets modified by the presence of the QGP? What can we learn
about the initial state and scaling properties in pp, p(d)-A and A-A collisions
from the production of high \pt\ photons, Z$^0$ and W$^\pm$ bosons? In the
version provided on arXiv, additional plots are included in the appendix with
respect to the version submitted for publication in the journal.
