1) VisaNet securely processes millions of transactions globally, over data centres connected through 1600 secure endpoints. 2) AI-based tools -VAA, VRM – prevent fraudulent transactions, enable banks create custom responses to decline, query suspicious transactions. 3) ML models analyse fraud migration patterns. Thus, detects, responds to frauds in real-time. 4) Using DL to alert/secure partners, financial firms; risk awareness programs.