Cards & Networks
Issuing, acquiring, schemes, and the dispute machine
Deep-dive the four-party card model, networks, product types, authorization concepts, tokenization, 3DS, economics (MDR/interchange), disputes, and how RuPay/NCMC sit alongside global schemes.
6 lessons · ~82 min · 0% complete
- Lesson 1 · Foundations · Both
Issuing, Acquiring & the Four-Party Model
Map who does what when a card is used: issuer, acquirer, network, and merchant — and how three-party models differ.
12 min → - Lesson 2 · Foundations · Both
Networks & Card Products
Compare Visa, Mastercard, RuPay, Amex, and UnionPay, then classify debit, credit, prepaid, and commercial products by economics and use case.
13 min → - Lesson 3 · Practitioner · Both
Authorization & ISO 8583 Concepts
Learn just enough ISO 8583 / auth messaging to debug declines, understand STAN/RRN, and talk to processors without drowning in bitmaps.
15 min → - Lesson 4 · Practitioner · Both
Tokenization & 3-D Secure
Reduce PAN exposure with network tokens and improve CNP authentication with 3DS — including liability shift intuition and UX trade-offs.
14 min → - Lesson 5 · Practitioner · Both
MDR, Interchange & Scheme Rules Overview
Break down merchant discount rate into interchange, scheme fees, and acquirer margin — and treat scheme rulebooks as product constraints.
13 min → - Lesson 6 · Advanced · Both
Disputes Lifecycle & RuPay / NCMC vs Global
Follow a dispute from claim to representment/pre-arbitration, then contrast India's RuPay and NCMC with global scheme realities.
15 min →