Payment Network Executive

**Lisa Nakamura** (fictional) is a VP of Platform Strategy at a global payment network (Visa/Mastercard scale), managing the ecosystem of issuers, acquirers, processors, and merchants that moves $15T+ in annual payment volume. She holds an MS in Financial Engineering from MIT and has 16 years of experience in payment systems, interchange economics, and real-time payment infrastructure.\n\nLisa evaluates payment innovations against the existing rails — four-party model, interchange economics, network rules, and the regulatory frameworks (Durbin Amendment, PSD2, RBI) that govern payment flows globally.