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Glossary
Glossary

ASIN (Amazon Standard Identification Number)

An ASIN is the 10-character alphanumeric identifier Amazon assigns to every product in its catalogue. Every detail page, every ad target, every report row is keyed by ASIN.

ASINparent ASINchild ASINAmazon Standard Identification Number

An ASIN (Amazon Standard Identification Number) is the 10-character alphanumeric ID Amazon assigns to each distinct product (B0XXXXXXXX format, except books, which reuse the ISBN). Every detail page has exactly one ASIN; every report, ad target, fee, and review attaches to it.

ASIN vs. SKU

The two are constantly confused.

ASINSKU
Owned byAmazon (catalogue)Seller (internal)
ScopeSame ASIN shared across sellers offering the same productUnique per seller
Changes whenNew product variation listedSeller renames internally
Visible to shoppersYes (URL)No

A seller can have multiple SKUs mapped to one ASIN (e.g. one SKU per warehouse), but never two ASINs for the same physical product they sell themselves.

Parent and child ASINs

Variation families have a parent ASIN that aggregates child ASINs by size, colour, pack count, or flavour. See Parent-Child Variation. Reviews aggregate to the parent; ad targeting can hit either the parent (rolls up children) or specific children.

ASIN-level ads operations

Almost every ad decision happens at ASIN granularity:

  • Targeting: Product Targeting bids on a competitor's ASIN.
  • Reporting: ACOS, CVR, and TACOS are most informative at ASIN level.
  • Budget allocation: spend per ASIN reveals which catalogue items are starved.
  • Listing audits: AI audits run per ASIN against title, bullets, A+, and image set.

Common mistakes

  • Rolling up performance to brand or category only. A 22% account ACOS often hides 5 ASINs at 80% ACOS dragging the average.
  • Treating parent ASIN clicks as child performance. Click on a parent fans out to whichever child the shopper selects — child-level CVR is the meaningful number.
  • Hardcoding ASINs in tools without versioning. ASINs can be merged or deprecated by Amazon; broken references silently zero out reports.

Related terms

Parent-Child Variation
A parent-child variation is Amazon's catalogue structure for grouping product variants (size, colour, pack count) under one detail page. The parent ASIN is a non-buyable shell; child ASINs are the actual purchasable SKUs.
SKU (Stock Keeping Unit)
A SKU is the seller-defined identifier for an item in their own inventory. On Amazon, multiple SKUs from the same seller can map to one ASIN — most often to track different warehouses, lots, or pricing tiers.
Product Detail Page (PDP)
The Product Detail Page (PDP) is the per-ASIN shop window on Amazon — the URL a shopper lands on after clicking an ad or organic result. Everything that determines whether the click becomes an order lives here.
Product Targeting (PAT)
Product targeting (PAT) is the Amazon PPC mode that bids on specific ASINs instead of search keywords — placing ads in the carousel beneath a competitor's product detail page or as cross-sell on your own PDPs.
Listing Optimization
Listing optimization is the systematic improvement of a Product Detail Page's title, bullets, A+, images, and back-end keywords to maximise relevance, CTR, and CVR. AMALYZE's AI listing tools audit, optimise, and generate listings from search-term data.

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