Some applications are required to display a large number of locations. Google Maps mashups can suffer performance problems when trying to display a large number of markers at any one time.
A heat map is a data visualization technique that shows the magnitude of a phenomenon as two-dimensional color. It is one of the most useful and powerful data analysis tools available in business intelligence.
A choropleth map is a thematic map in which areas are shaded or patterned in proportion to the measurement of the statistical variable being displayed on the map, such as population density or per-capita income.
Axional Geospatial can map multiple layers of independent data sources. For example, a company might be interested in cross-referencing different data on a map, such as socioeconomic data of a country.