I'd like to add a note here that fully self hosted openstreetmap is a powerful tool. The vector graphic data sets exist freely for anyone to mirror for their own use. The full tool chain of software needed to build your own tile server is available and not very difficult to implement. I'm aware of more than one ISP using openstreetmap for NOC monitoring of outages, individual customer premises endpoint status, and so…
Any good tutorials on this? What are the required specs? I assume the dataset is huge?
https://wiki.openstreetmap.org/wiki/Deploying_your_own_Slipp...
https://switch2osm.org/serving-tiles/
It's small enough that I have a self hosted test tile server in my home office with about 8TB of storage, on a WD hard drive that was shucked out of a USB3 enclosure.
https://medium.com/gowombat/self-hosted-open-source-cheap-al...