The quest to understand the fundamental properties of neutrinos remains
one of the most compelling challenges in particle physics. Neutrinoless
double beta decay (0νββ) is a rare nuclear process that, if observed,
would provide crucial insights into the nature of neutrinos,
specifically whether they are Majorana particles, which are their own
antiparticles. Additionally, detecting 0νββ would offer a direct
measurement of the absolute neutrino mass scale, a parameter not
accessible through oscillation experiments alone. This talk will provide
an overview of the current theoretical advancements and experimental
efforts in the search for neutrinoless double beta decay. We will
discuss the latest results from leading experiments, the technological
innovations driving these investigations, and the implications of
potential discoveries on our understanding of neutrino mass and nature.
By highlighting both the achievements and challenges in this field, we
aim to shed light on the future directions of neutrino research and its
profound impact on particle physics.