Yes, and if you buy managed databases as a service you don't have to do your own backups (though you probably should copy their backups offsite on a regular sch

Yes, and if you buy managed databases as a service you don't have to do your own backups (though you probably should copy their backups offsite on a regular schedule). That doesn't mean you should regard k8s as the new OS. If you wanted to go that route, the relevant things to look at are Inferno, Plan 9, and clustered VMS.