Dwarf galaxies are small, low-luminosity galaxies characterized by having star populations and interstellar gas that are substantially less massive than those found in major galaxies. These systems are common components within larger galactic structures, forming the outskirts and halos of larger galaxies and clusters. Their study is crucial in astrophysics because they provide valuable insights into the processes of galaxy formation, stellar dynamics, and the distribution of dark matter. Because they are less affected by the strong tidal forces and intense star formation histories of giant spirals, they serve as excellent laboratories for understanding the early stages of cosmic structure formation.