Poet Saxe’s lines could apply to geographic information systems (GIS) in that relating to the subject may well depend on your point of view. Asking what GIS3 is about is sort of like asking “What is a computer about?” The capabilities of GIS are so broad and its uses so pervasive in society, geography, urban and regional planning, and the technical world in general that a short, meaningful description is impossible. But for starters, here is a generic definition of GIS that you might find in a dictionary:
A geographic information system is an organized collection of computer hardware and software, people, money, and organizational infrastructure that makes possible the acquisition and storage of geographic and related attribute data, for purposes of retrieval, analysis, synthesis, and display to promote understanding and assist decision making.
To better understand one facet of GIS, consider how you might use the technology for a particular application. Solve the following site selection problem: