45 Classic Payment Architecture Diagrams: Core Principles, Cross-Border & AI Flows
A curated collection of 45 payment architecture diagrams spanning five payment paradigms, basic principles, domestic and cross-border ecosystems, global platforms, blockchain, AI-driven flows, and scenario-based designs, with key insights on ledger-centric value transfer and cross-border fund routing.
Five Payment Paradigms
The article opens with a foundational statement: regardless of paradigm, payment is fundamentally "value transfer between ledgers"; the essence of payment is the ledger.
Information transmission via SWIFT / switching institutions.
Fund transfer (ledger entry transfer) via correspondent banking / nostro-vostro accounts.
Digital payment upgrade strategy overview.
01. Basic Principles
Information flow and fund flow analysis principle.
Payment system boundary delineation.
Transaction processing center cross-section.
Payment business types and relationships.
Payment processing center architecture.
Cashier call relationship diagram.
Cashier product architecture.
Refund center product architecture.
Settlement center product architecture.
Accounting center product architecture.
Full bookkeeping panorama.
Reconciliation center product architecture.
Fund reconciliation principle.
Wallet-based fund management solution.
Wallet business organization chart.
02. Domestic Payment (China)
Domestic payment ecosystem composition.
Payment call relationships after breaking direct connections (断直连).
Domestic payment panorama.
Domestic payment account panorama.
Domestic payment settlement panorama.
Domestic payment subsystem panorama.
E-commerce payment subsystem panorama.
Third-party payment subsystem panorama.
Third-party payment business architecture.
Third-party payment collection full business process.
Bank core product architecture.
03. Cross-Border Payment
Cross-border payment participants and relationships.
Global payment solution pattern: local in-country capabilities + unified global clearing & scheduling, covering collection, clearing, fund aggregation/allocation, and global distribution for a seamless enterprise experience.
End-to-end cross-border fund flow: from acquiring in origin country, local currency payment, FX conversion, internal settlement, cross-border remittance, overseas institution settlement, to merchant settlement in destination country.
Cross-border local vs. foreign currency outbound paths.
Two major paradigms of cross-border fund transfer.
04. Global Payment
Global payment institution accounting architecture in five layers.
Global cashier architecture panorama.
PingPong (派安盈) architecture panorama.
WorldFirst (万里汇) capability ecosystem.
XTransfer's X-Net: described as the world's first and only unified global B2B cross-border trade settlement network and risk management platform.
05. Blockchain Payment
Omitted; readers referred to earlier articles and a community whitepaper "从入门到精通的学习白皮书".
06. AI Payment
WeChat AI payment dedicated card full business process.
AI payment protocol panorama.
Overall AI payment processing flow.
07. Scenario Payment
Three scenario-specific architecture diagrams (details not expanded in text).
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Chen Tian Universe
Chen Tian Universe, payment architect specializing in domestic payments, global cross‑border clearing, core banking, and digital payment scenarios. Notable works: “Ten‑Thousand‑Word: Fundamentals of International Payment Clearing”, “35,000‑Word: Core Payment Systems”, “19,000‑Word: Payment Clearing Ecosystem”, “88 Diagrams: Connecting Payment Clearing”, etc.
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