| Name | Description |
|---|---|
| Acquirer (External) | Facilitates PIN transactions for merchants. |
| ATM | Allows customers to withdraw cash. |
| E-mail System | The internal Microsoft Exchange e-mail system. |
| Internet Banking System | Allows customers to view information about their bank accounts, and make payments. |
| Mainframe Banking System | Stores all of the core banking information about customers, accounts, transactions, etc. |