  Dwarf galaxies make ideal laboratories to test galaxy evolution paradigms and
cosmological models. Detailed studies of dwarfs across the spectrum allow us to
gauge the efficacy of astrophysical processes at play in the lowest mass halos
such as gas accretion, feedback, turbulence and chemical enrichment. Future
observational studies will deliver unprecedented insights on the orbits of
dwarf companions around the Milky Way, on their star formation histories and on
the 3-D internal motions of their stars. Over large volumes, we will assess the
impact of local environment on baryon cycling and star formation laws, leading
to a full picture of the evolution of dwarfs across cosmic time. In
combination, future discoveries promise to trace the history of assembly within
the Local Group and beyond, probe how stars form under pristine conditions, and
test models of structure formation on small scales.
