Vector map of the whole Earth in PMTiles format is only ~65GB[1] and doesn't need any server or database - it's just a static file which you can host wherever you want.

bdon (author of PMTiles) already commented on this thread. I recommend taking a look at https://protomaps.com/docs - compared to this, raster tile servers sound like ancient technology.

[1]: https://app.protomaps.com/store/planet-z14