An Advanced Map allows you work with geographic data using layers. A map layer defines how a GIS dataset is symbolized and labeled (that is, portrayed) in your map views. For example, a point of interest layer could represent a collection of useful and interesting locations. These locations include attributes that describe each POI’s properties, such as the name of the POI and what type of POI it is, and other potential attributes.
Detailed information can be found in the section Using Advanced Maps.