If you’re selling on Amazon, you have come across many Amazon acronyms and terms that sellers use.

Trying to understand all the jargon and acronyms can be tedious. Don’t worry, we’re here to help you out. We’ve got a list of the most used acronyms here so that you can know about the terms related to your business.


1. ACOS (Advertising cost of sales) is the term Amazon uses to measure the performance of Amazon sponsored product campaigns. It helps you to understand how well your ads are performing and if it is driving any results or not.

2. A9 Algorithm is similar to Google’s algorithm helps decide which Amazon products to display and how high those products will rank.

3. ASIN (Amazon Standard Identification Number) it’s a unique 10 digit alphanumeric code for a product that’s assigned by Amazon. It’s primarily used for identify products within their product catalog of billions of items.

4. ASP (Average Selling Price) as name implies it refers to the average price that Amazon seller sell their items for. It is calculated by net sales divided by the number of products sold.

5. BSR ( Best seller rank) is a score that Amazon assigns for certain product based on historical sales data. It changes hourly.

6. EAN (European Article Number) is the standard barcode that represents the 13 digit GTIN on most products sold within Amazon’s European marketplaces.

7. FBA ( Fulfillment By Amazon) Amazon picks, packs, ships and also handle customer service for you with the fees.

8. FBM ( Fulfillment By Merchant) In contrast with FBA, you need to handle your logistics and shipment process.

9. FNSKU (Fulfillment Network Stock Keeping Unit) This number is used to identify a  specific seller’s specific product within an Amazon Fulfillment Center.

10. GTIN (Global Trade Item Number) is an universal identifiers used internationally to find product information.

11. ISBN (International Standard Book Number) is a 13-digit identity number assigned to individual books.

12. ODR (Order Defect Rate) metric that Amazon use to measure account performance. It is calculated as the percentage of orders that have received negative feedback, an A-to-Z guarantee claim, or a service credit card charge-back. Amazon sellers are expected to keep their ODR under 1%.

13. OA (Online Arbitrage) is a traditional concept and most of the Amazon sellers use this model to purchase products to sell on Amazon. OA is simply purchasing products for lower price from online stores and sell for higher price on Amazon.

14. PPC ( Pay per click advertising) as name implies this allows you to only pay when someone actually clicks on your advertisement.

15. ROAS (Return on Ad Spend) is a metric that measures how much return you are getting for the money you spend on advertisements.

16. SKU (Stock Keeping Unit) internal identification code used to differentiate products in your inventory.

17. TOS (Terms of Service) Amazon has stated some regulations that sellers need to follow and if you are subject to any violation, your account will get suspended. So stay up-to-date with Amazon TOS.

18. UPC (Universal Product Code) this is the 12-digit barcode displayed on the majority of products in the United States.


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