Upload and download functionality related to EDI implementation to Amazon store.
EDI stands for "Electronic Data Interchange".
Wikipedia https://en.wikipedia.org/wiki/Electronic_data_interchange: "Electronic data interchange (EDI) is the concept of businesses electronically communicating information that was traditionally communicated on paper, such as purchase orders and invoices. Technical standards for EDI exist to facilitate parties transacting such instruments without having to make special arrangements."
My task was to create a custom made API with functionality for uploading and downloading EDI documents to Amazon. Using PHP and composer I created a class based library that exposed a few functions making it very easy for a PHP developer to integrate in a shop solution.