  The fundamental nature of Dark Matter is a central theme of the Snowmass 2021
process, extending across all Frontiers. In the last decade, advances in
detector technology, analysis techniques and theoretical modeling have enabled
a new generation of experiments and searches while broadening the types of
candidates we can pursue. Over the next decade, there is great potential for
discoveries that would transform our understanding of dark matter. In the
following, we outline a road map for discovery developed in collaboration among
the Frontiers. A strong portfolio of experiments that delves deep, searches
wide, and harnesses the complementarity between techniques is key to tackling
this complicated problem, requiring expertise, results, and planning from all
Frontiers of the Snowmass 2021 process.
