GPN (Gerbang Pembayaran Nasional) and Mastercard are both payment networks, but they cater to different markets and offer varying benefits. GPN is a domestic payment system designed to promote cashless transactions within Indonesia, typically offering lower transaction fees for local merchants. Mastercard, on the other hand, is a global payment network widely accepted worldwide. The choice between GPN and Mastercard depends on your specific needs and where you primarily conduct your transactions.