An ATM (Automated Teller Machine) transaction allows users to access their bank accounts to perform various financial activities. Common transactions include withdrawing cash, depositing money, checking account balances, and transferring funds between accounts. Users typically need a bank card and a PIN (Personal Identification Number) to complete these transactions securely. ATMs are available 24/7, providing convenience for customers who need quick access to their funds. They are found in various locations, such as bank branches, shopping centers, and gas stations. Each transaction may incur fees, especially when using ATMs outside of the user's bank network.