OpenStreetMap is a community-built map of the world. Volunteer mappers add and maintain data such as roads, trails, cafés and railway stations, using aerial imagery, GPS devices and field maps. The data supplies many websites, apps and devices. You may use it for any purpose if you credit OpenStreetMap and its contributors; for certain kinds of derived work, the result may only be distributed under the same licence. Organisations can therefore build their own tile server and routing service on the data instead of relying on a commercial map API.
The OpenStreetMap Foundation, a not-for-profit organisation, operates the website and related services; it is registered in England and Wales in the United Kingdom. According to its privacy policy, personal data is kept in the UK and the Netherlands, with backups in the EU. Map tiles are delivered through a CDN, and Fastly is among those supporting the hosting. If you run your own tile and routing servers in the EU, the processing stays under your control.