Amazon Instant Access (AIA), is a fulfillment technology for virtual content that is purchased on the Amazon web site and needs to be delivered to a third party server. The Amazon Instant Access SDK for PHP enables PHP developers to easily integrate their systems and onboard with the AIA system.
OskarStark/amazon-instant-access-sdk-php
PHP SDK to aid in 3p integration with Instant Access
PHPApache-2.0