Smart Payment Buttons Reference
Learn about advanced options for various features, parameters, and integration styles for Smart Payment Buttons.
|Call the Orders API from your server||PayPal provides client-side shortcuts to help you complete a transaction with minimal server integration. You can also make calls to PayPal APIs directly from your server to integrate PayPal more closely with your backend systems, services, and databases. Learn how to change your integration to call these APIs.|
|Upgrade your integration||If you are using a previous version of the PayPal Checkout integration, including custom buttons, full-page redirects, or