Dark matter and dark energy are the two components that
dominate the matter energy content of our Universe. As of today their
true substance is still unknown. Dark matter and dark energy are usually
considered as two independent fluids, nothing prevents though the
existence of an interaction between them. In my talk, after proposing
some classification of the interactions studied in the litterature I
will go through several possible probes of the dark coupling. I will
show that an interaction in the dark sector is still allowed by present
data.
