Advantages of PDT
The advantage of using PDT over IPN is that it
enables you to track orders more efficiently. The best way to think
about PDT is to consider where it fits in the three steps of a
customer purchase:
Your customer selects what he wants to buy on your web site, and
during the checkout process, all the order items are handed to
PayPal. PayPal processes the payment and confirms the sale to the user on the
PayPal web site and via email. Your site receives the order information via PDT, records the sale in
your site's database (if you so choose), and shows
the user a nice receipt, tailored to the order.
This is a much cleaner transaction experience for your customers than
the process afforded by IPN, because they can see their order results
immediately on your site. It also allows you to track only those
orders that have been completed.
—Rob Conery and Dave Burchell
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