By default, the Maps SDK only uses the tile store for tile regions.
Tile Store: The tile store manages retrieving and organizing tile packs. The Offline Manager API handles metadata and descriptors related to tilesets. Because they have less per-tile and per-connection overhead more efficient to transfer over the network and store on the file system than individual tiles. Tile Pack: Tile packs are binary files made up of a parent tile and its descendant tiles covering a specific range of zoom levels and over a predefined geographic area. To create a tile region, a developer must specify a geometry describing each region's boundaries, source tileset(s), and zoom range(s). 
Tile regions are used by tile stores to fetch and manage tile packs necessary to provide offline support in that area.
Tile Region: A tile region is a geographic area for which offline data is needed. Each time you create a tile pack, you will provide both a tileset descriptor and a tile region before tile data can be fetched for offline use. You can create tileset descriptors with the Offline Manager. Tileset descriptor: A tileset descriptor contains metadata about the tilesets, zoom ranges, and pixel ratio that cached tile packs should include. It is used to manage style packs and to produce tileset descriptors that can be used with a tile store. Offline Manager: The Offline Manager API provides a configuration interface and entrypoint for offline map functionality. 
These are a few key terms and concepts you may need to reference when working with offline maps:
Map data, which is organized into preassembled tile packs.Use the Offline Manager API to manage style packs. Style data, which is organized into style packs.The maps they download will be fully functional and include the styles, tiles, and other resources you specify.Īn offline map requires two main components: If your user base spends most of their time off the grid, use the Mapbox Maps SDK's offline features to download and store pre-selected regions for use when there is a loss of connectivity.
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