You probably remember them from Home decor magazines of the 80s, Track Lights were excessively used in that era both commercially and in residential interiors. Now they make a strong comeback being used as a reference for contemporary, modern design.
With their practicality, elegance, and soft distribution of light across longer distances using only one electrical box like regular lighting fixtures use, they gain more audience.
Basically, they can be used to illuminate a certain wall or feature in your room, giving it a “Museum effect” to highlight it. Moreover, they can be used to distribute general illumination, simply depending on the requirements of your space.