ASIN

ASIN (Amazon Standard Identification Number) is a unique 10-character alphanumeric code automatically assigned by Amazon to each product listing in its catalog.

Example: B07ZB5C3ZM

The ASIN:

• Acts as Amazon’s internal catalogue ID
• Is used to track product data, including title, bullet points, description, images, and backend keywords
• Links directly to price, stock, fulfillment method, reviews, and ranking
• Allows sellers and systems to manage listings efficiently

Each ASIN is associated with:

• A specific product variant (e.g. size/color)
• A unique SKU/EAN/UPC/ISBN, depending on category
• One product detail page, even if sold by multiple sellers

There are two main types:

• Parent ASIN – represents the overall product group (e.g. a T-shirt)
• Child ASINs – represent each variant (e.g. size/color combinations)

Why ASINs matter:

• They’re used in search indexing, advertising (PPC), inventory tracking, and reporting
• Many Amazon tools and APIs use ASIN as the core reference point
• You need ASINs to run ads (Sponsored Products / Display), manage campaigns, and analyze performance

💡 Books use the ISBN as their ASIN.
💡 Sellers can create a new ASIN only if the product doesn’t already exist in the Amazon catalog.

In short:

ASIN = Amazon’s master ID for every unique product listing - it powers everything from search results to sales reports.