GIS Basics
A Geographic Information System, or GIS, is software that stores, manages, and analyzes spatial data, information tied to a specific location, letting users layer different kinds of data (roads, population, land use, elevation) over the same map and look for relationships between them. GIS is used constantly in real-world decision-making, from city planners choosing where to build a new road to emergency responders mapping a wildfire's spread, because it lets people see patterns that would be difficult to spot in a table of numbers alone.
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