Anti-money Laundering Software (AML)

Anti-money laundering (AML) software is a type of computer program used by financial institutions to analyze customer data and detect suspicious transactions.
AML systems filter customer data, classify it according to level of suspicion and flags it for for inspection for anomalies. Such anomalies include any sudden or substantial increase in funds or a large withdrawal, and structuring - depositing multiple smaller amounts with in a certain period that sums up to a large amount.
The software flags these transaction. The software mines the data and flagged suspect transaction and generate the report, which is evaluated or will be subject for investigation and call the customer, if necessary.

Reference: http://searchfinancialsecurity.techtarget.com