Summary: I got my Amazon Access Key ID and Secret Access Key for free using my Amazon affiliate account.
(Skip intro and go to the Step by Step Instructions below:)
I purchased a WordPress plugin that fetches Amazon products directly through my WordPress post interface. I am running an Amazon affiliate WordPress ecommerce online store. The plugin is supposed to help me populate my Amazon affiliate website faster. But, in order to make the plugin work and connect with my actual Amazon account (so I get my commission), I needed an Amazon Access Key ID and Amazon Secret Access Key.
According to Amazon, “the Product Advertising API provides programmatic access to Amazon’s product selection and discovery functionality so that developers can advertise Amazon products to monetize your website.
The Amazon Product Advertising API gives us access to Amazon’s selection of millions of products in different categories such as books, music, digital downloads, electronics and more from Amazon.com, Amazon.ca, Amazon.co.uk, Amazon.de, Amazon.fr, Amazon.es, Amazon.it, Amazon.co.jp, Amazon.cn, Amazon.in …”
In short, the Amazon API enables our plugin to search for products, product information, rating and other features using our Amazon account.