The book by Noel Rappin is a foundational guide for developers and business owners looking to build robust e-commerce systems. It moves beyond simple API integration to address the complex business logic required for secure, professional online transactions. Core Concepts of Web Payments
Typically a percentage of the transaction plus a fixed cent amount (e.g., Stripe's pricing ).
Using background jobs to manage third-party interactions and building systems that gracefully notify users of failed transactions.
Beyond charging a card, you must handle failure cases, issue refunds, and apply discounts while maintaining strict data integrity.
The cost of managing legal compliance, tax calculations, and secure SSL/TLS infrastructure.
