소개
This specialized skill empowers developers to implement comprehensive PayPal payment solutions within their applications. It provides standardized implementation patterns for PayPal Checkout, subscription-based recurring billing, and complex refund workflows. By leveraging this skill, developers can securely handle Instant Payment Notifications (IPN), verify transaction authenticity, and manage international payments using both client-side JavaScript SDKs and server-side REST APIs, ensuring a robust and scalable checkout experience.