KML (Keyhole Markup Language) is an XML-based file format used to represent geographic data in applications like Google Earth, Google Maps, and other geospatial software. It allows users to create and share maps, points of interest, images, polygons, and models. KML files contain information about locations, including latitude, longitude, altitude, and other attributes. They can also include styling information to control how the data is displayed, such as colors, icons, and labels. KML is widely used for visualizing geographic data, creating custom maps, and sharing location-based information. It supports features like placemarks, paths, polygons, and ground overlays, making it a versatile format for representing various types of geographic data. KML files can be easily shared and viewed in different geospatial applications, making it a standard format for exchanging geographic information.