GeoJSON: A Standardized Format for Geographic Data Encoding (RFC 7946)

GeoJSON is a standardized format (RFC 7946) for encoding geographic data structures. It supports geometry types including Point, LineString, Polygon, MultiPoint, MultiLineString, and MultiPolygon. Features combine geometric objects with properties, and FeatureCollections group multiple features. The format was standardized by the IETF in 2015.