An Amazon Standard Identification Number (ASIN) is a 10-character alphanumeric unique identifier
assigned by Amazon.com
and its partners for product identification within the Amazon organization.
Usage and structure
Each product sold on Amazon.com is given a unique ASIN. For books with 10-digit International Standard Book Number
(ISBN), the ASIN and the ISBN are the same. The Kindle
edition of a book will not use its ISBN as the ASIN, although the electronic version of a book may have its own ISBN. The ASIN forms part of the URL of a product detail page on Amazon's website.