MapBox is a company that provides a cloud-based map hosting service and set of tools for designing and deploying map tiles. It uses modern web technologies like CSS, JavaScript, and JSON to allow for separation of concerns, platform agnosticism, and sharing of map styles and data. The MapBox stack includes TileMill for map styling, TileStream for serving map tiles from MBTiles files, and Wax as a JavaScript library for connecting to mapping services.