A geographic information system (or GIS) is a system designed to capture, store, manipulate, analyze, manage, and present spatial or geographic data.

Rather than combining data points into a chart or graph, geospatial data allows users to understand data with additional context. Whether through determining a new site for a community center, identifying high risk areas for car accidents, or identifying optimal spots for public greenspace and rainwater collection, community-based GIS empowers individuals to use public data to create social good.