Chen Tian Universe

Feb 21, 2026 · Fundamentals

How Card Networks Power Global Payments: From Rules to Real‑Time Settlement

This comprehensive guide explains what card organizations are, how they act as the central platform connecting issuing and acquiring banks, the architecture of their private networks, the ISO‑8583 and ISO‑20022 messaging standards, the clearing and settlement process, fee models, and future challenges from stablecoins and CBDCs.