  Transverse momentum distributions and generalized parton distributions
provide a comprehensive framework for the three-dimensional imaging of the
nucleon and the nucleus experimentally using deeply virtual semi-exclusive and
exclusive processes. The advent of combined high luminosity facilities and
large acceptance detector capabilities enables experimental investigation of
the partonic structure of hadrons with time-like virtual probes, in complement
to the rich on-going space-like virtual probe program. The merits and benefits
of the dilepton production channel for nuclear structure studies are discussed
within the context of the International Workshop on Nucleon and Nuclear
Structure through Dilepton Production taking place at the European Center for
Theoretical Studies in Nuclear Physics and Related Areas (ECT$^{\star}$) of
Trento. Particularly, the double deeply virtual Compton scattering, the
time-like Compton scattering, the deeply virtual meson production, and the
Drell-Yan processes are reviewed and a strategy for high impact experimental
measurements is proposed.
