MBTiles is a file format for storing tilesets. It’s designed so that you can package the potentially thousands of files that make up a tileset and move them around, eventually uploading to Mapbox or using in a web or mobile application. MBTiles is an open specification and is based on the SQLite database. MBTiles can contain raster or vector tilesets.
You can export Mapbox Studio Classic sources as MBTiles files and you can upload MBTiles files directly in Mapbox Studio. When uploading MBTiles, keep the following in mind: