Fintech Architecture™: Payments: How Payment Systems Actually Work (Fintech Architecture™ Series)
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Description
The practitioner reference for anyone who needs to understand how payment systems actually work — how money moves, who earns at each step, and what causes a payments business to fail. Fintech Architecture™: Payments covers the full five-layer payments stack from consumer to merchant, the economics of every participant — card networks, issuers, acquirers, processors, payment facilitators, and ISOs — and the six core business model variants with the precision required to evaluate any of them in a live deal or coverage context. The chapter on Pix — Brazil's instant payment system that achieved universal coverage in eighteen months and eliminated the economics of the boleto infrastructure that had dominated Brazilian payments for decades — provides the clearest available case study in what rail displacement actually looks like at speed. The two case studies — Vantix, a US payment facilitator navigating take rate compression and a multi-rail transition, and PagaRápido, a Brazilian payments company that rebuilt its business model twice in response to Pix — run every analytical concept through coherent, realistic narratives built from real market behavior. The appendix contains three reference tools for live use: a key metrics guide, a model comparison cheat sheet, and a diligence question checklist. Back Matter — What's in This BookThe core distinction between message flows and money flows — the most frequently confused concept in payments analysisThe full five-layer payments stack: consumer/merchant, issuing bank, card network, processor, payment facilitator — who sits at each layer, what they earn, what risk they bearHow digital wallets work and why Apple Pay, Google Pay, and PayPal have completely different economic structures despite looking similar to consumersThe four rails: card, ACH, RTP/FedNow, and Pix — mechanics, economics, reversibility, and fraud risk for eachSix business model variants: card network, issuer, acquirer, PayFac, ISO, and payments orchestration — with the key vulnerability and moat strength of eachInterchange economics: the Durbin Amendment, regulated vs. unregulated rates, and why interchange compression is a permanent structural trendFive failure modes: interchange compression, settlement and fraud loss concentration, rail displacement, regulatory disruption, and operational fragilityGross vs. net revenue: the single most important analytical distinction in payments, and why getting it wrong makes a platform appear 3x to 4x larger than it isThe Brazilian context: Pix mechanics, the Banco Central's regulatory framework, and the SVB crisis parallel for banking concentration risk Read more
Publisher : Arcen Press
Accessibility : Learn more
Publication date : April 10, 2026
Language : English
File size : 1.5 MB
Screen Reader : Supported
Enhanced typesetting : Enabled
X-Ray : Not Enabled
Word Wise : Enabled
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