https://www.ordnancesurvey.co.uk/business-and-government/products/open-mastermap.html
Web Map Tile Service
Individual flat image (raster) tiles delivered online for base maps in geographic information systems (GIS), web and mobile applications.
Vector Tile Service
Individual data (vector) tiles, consisting of geometry with limited or no attribution, delivered over the web primarily for customisable base maps in GIS, web and mobile applications. This is currently being trialled as part of the OS Open Zoomstack trial.
Web Feature Service
This will deliver geographic features (vector) online – geometry and attribution. It can be used in various ways such as for visualisation, querying or creating derived data in GIS, web and mobile applications.
Navigation API
This will provide point-to-point (A to B) and multi-point (A to B to C…) routing across roads and paths to support routing use cases, e.g. route planning.
Identifier API
A look-up service to link between different identifiers and datasets. This will enable a variety of use cases outside the service, such as linking users’ own data to common identifiers.
Machine-to-machine bulk downloads
Users will be able to access OS products in an automatable way to drive business processes. It’s likely to provide access to OS products at a persistent URL for each epoch.