We are trying to replace [Google Maps]( https://developers.google.com/maps/premium/) to use other alternatives like Mapbox, HERE in the future. However, we found that there are some Open Source Project like OSRM [1], Valhalla [2]. I would like to know what is your experiences with OpenStreetMaps as a backend for routing systems. If it is the case, would you please share your opinion and experience.
[1]: https://github.com/Project-OSRM/osrm-backend
[2]: https://github.com/valhalla