Most banks/credit unions that aren't giant or don't have old legacy systems tend to use outsourced core software from one of a few vendors, like Jack Henry or F

Most banks/credit unions that aren't giant or don't have old legacy systems tend to use outsourced core software from one of a few vendors, like Jack Henry or FiServ. Banks/CUs can outsource their Internet banking for roughly $1/ account per month for a hosted solution.