
The API tokens are presented through AWS IAM3 in place of a complex registration process.

What is the Selling Partner API (SP-API)? Whenever a data file is sent to MWS, you have to wait until the processing is completed, and only then it pulls down another file that shows errors to particular lines in the uploaded file. The error-handling process is cumbersome. It also is static with non-adjustable rate boundaries. XML enforces more compulsory structure on every API request than JSON, resulting in additional layers of abstraction over HTTP. It’s an API based on XML, a design that was pushed aside when JSON-based APIs turned out to be more popular in the last decade. They can determine when the customers will be more likely to make a purchase, make better inventory management decisions, and ad spending can be optimized, generate special offers and promotions. The new API enables the sellers to automate access to data for enhanced selling efficiency, explore insights, and get more sense of their data. The Amazon SP API is a REST-based system through which data like listings, payments, orders, reports, etc., can be gained access for software applications.

Now in place of MWS, Amazon has introduced the Amazon Selling Partner API (SP-API). It’s a great tool since it allows sellers to handle more extensive inventories and order volume, adjust prices automatically to stay competitive, and perform other bulk operations.

Sellers can regulate the whole thing about Amazon stores via MWS, from inventory management to getting information on orders to fulfillment handling. For more than a decade Amazon’s Marketplace Web Services (MWS) has been the only possibility for interfacing programmatically with Amazon seller accounts.
