KML
KML (Keyhole Markup Language) is an XML-based file format used for representing geographic data and annotations in two-dimensional maps and three-dimensional Earth browsers. It allows developers to define placemarks, paths, polygons, and overlays with associated metadata, making it essential for geospatial applications. Originally developed by Keyhole, Inc., it was adopted by Google and is now an Open Geospatial Consortium (OGC) standard.
Developers should learn KML when working on projects involving mapping, GIS (Geographic Information Systems), or location-based services, as it enables easy sharing and visualization of spatial data across platforms like Google Earth and Google Maps. It is particularly useful for creating interactive maps, displaying GPS data, or integrating geospatial features into web and mobile applications, offering a standardized way to handle geographic information.