A very small file saved on a user’s computer or mobile device for the purpose of storing information related to the user’s interaction with a particular site.

The value or quantity of a retailer’s current stock of products. 

A distinct market segment.

In online marketing, qualitative metrics seek to measure the quality of a customer interaction, and may be subjective in nature. A retailer, as an example, may implement a new product review campaign, [..]

A publisher or site owner that forwards qualified web traffic to an online merchant on a pay-for-performance basis is called an affiliate in the context of online marketing. 

A universal (uniform) resource locator (URL) that includes an affiliate's identification number and additional information that makes it easier for merchants to track affiliate activity is an [..]

In the retail context, Amazon is a multi-national online retailer with a market capitalization in excess of $128 billion U.S. as of January 2013. Amazon also hosts a marketplace wherein other Internet [..]

An API is a protocol created to allow separate software solutions to communicate over a relatively simple interface. Developers will often use APIs to connect or integrate systems and services.

A payment card transaction performed specifically to determine if the payment account has sufficient funds to complete a given transaction.

A manufacturer-approved or -designated distributor able to sell products in quantity to commercial customers like Internet retailers.