  We address the emergence of entropy production in the non-equilibrium process
of an open quantum system from the viewpoint of the environment. By making use
of a dilation-based approach akin to Stinespring theorem, we derive an
expression for the entropy production that comprises two fundamental
contributions. The first is linked to the rate of creation of correlations
between system and environment whereas the second highlights the possibility
for the environment to modify its state in light of its coupling to the system.
Both terms are shown to be associated with irreversible currents within the
system and the environment, which pinpoint the emergence of irreversibility in
the Markovian limit. Finally, we discuss how such a change of perspective in
the study of entropy production has fecund implications for the study of
non-Markovian open-system dynamics.
