A plurality of ATMs of different financial institutions include ATM software that enables them to individually selectively access different ATM applications through network communication with a remote server of an application service provider (ASP). The ATM software also allows the ATMs to carry out transaction responsive to instructions included in ATM application accessed from the ASP server. The ASP server uses a thin client model or remote windowing to execute individual ATM application sessions for each ATM connected to the server. The ATMs run limited capability thin client software to serve as portals to the ATM sessions executing on the ASP servers. The right to access ASP server side ATM applications is provided to the financial institutions in exchange for payment to the ASP. Server software can cause charges to be assessed on a time basis, a per ATM basis, or a per transaction basis.