PMTiles is great, but there's a risk hosting multi-gb files on metered hosting -- a client might not respect range requests and you open yourself up to a denial of wallet attack.
I can't really see doing it on S3, unless it's behind a lightweight tile server. I'd do it on hetzner or linode or one of the lower cost bandwidth providers.
(edit -- citybik.es is pretty cool, are you backing up to GBFS or a different set of data feeds? e.g. https://github.com/MobilityData/gbfs/blob/master/systems.csv is a list of ~ 800 gbfs feeds, some dockless, some docked I've done a bit of work in this space, feel free to ping me)
I can't really see doing it on S3, unless it's behind a lightweight tile server. I'd do it on hetzner or linode or one of the lower cost bandwidth providers.
(edit -- citybik.es is pretty cool, are you backing up to GBFS or a different set of data feeds? e.g. https://github.com/MobilityData/gbfs/blob/master/systems.csv is a list of ~ 800 gbfs feeds, some dockless, some docked I've done a bit of work in this space, feel free to ping me)