Study Guide

Table Of Contents
G
158 March 2008 PayPal Certified Developer Program Study Guide
P
PayPal Direct Payment API — An API that enables merchants to accept credit card payments
directly on their website. PayPal remains invisible, so that the merchant controls the customer
experience.
PayPal Express Checkout — An API that allows PayPal account holders to check out fast with
saved information, and enables merchants to gain incremental sales from the growing base of
PayPal users.
R
Redirect — To automatically induce a web browser to go to a new location.
Request-response model — A message exchange pattern in which an application sends a
request message to a server, and the server executes the request and returns a message in
response to the application.
S
Sandbox — A self-contained environment in which developers can prototype and test PayPal
applications.
T
Token — A parameter used in Express Checkout to identify a transaction.
W
Website Payments Pro — An all-in-one payment solution that includes the Direct Payment
API and Express Checkout.