Amazon AdsAdvertising at the shelf

Why marketplace advertising is different#

On Google or Meta, an ad takes someone to your website, where you control the experience. On Amazon, the ad and the shop are the same place. The shopper sees your product next to competitors, with prices, ratings and delivery promises visible at a glance. Your ad can win the click and still lose the sale to the listing beside it.

That makes Amazon advertising inseparable from retail fundamentals. Price, reviews, stock availability, delivery speed and listing content decide whether a click converts. Advertising amplifies a strong listing and wastes money on a weak one. Fix the shelf before buying more traffic to it.

The main ad types#

Most sellers start with Sponsored Products because they are closest to purchase and simplest to set up. Sponsored Brands and Sponsored Display require brand registration and suit sellers who want to build brand recognition and defend their listings. Availability differs by marketplace, so check the rules for each country you sell in.

Targeting: keywords and products#

Sponsored Products can target shopper search terms, through keywords, or specific products and categories, through product targeting. Amazon also offers automatic targeting, where it matches your ads based on your listing content. A common structure uses automatic campaigns for discovery and manual campaigns for control.

Product targeting deserves particular attention. You can place your ads on competitors' product pages, defend your own pages from competitors, and cross-sell between your own products. Defending your own listings is often cheap and protects sales you have already earned.

Understanding ACoS and TACoS#

Amazon's headline efficiency metric is ACoS, advertising cost of sales: ad spend divided by the sales attributed to ads. It is the inverse of ROAS. A lower ACoS means more efficient advertising. But ACoS alone can mislead, because it ignores the organic sales that advertising helps generate.

TACoS, total advertising cost of sales, divides ad spend by total sales, both advertised and organic. It shows how much advertising the whole business carries. A rising ACoS with a falling TACoS can be healthy, if advertising is lifting organic sales. A falling ACoS with a rising TACoS suggests advertising is claiming sales that would have happened anyway.

Break-even ACoS equals your margin before advertising. If your margin is 30 per cent, an ACoS above 30 per cent means ad-attributed sales lose money on their own. You may accept that during a launch, to build reviews and rank, but it should be a deliberate, time-limited decision. Our ROAS versus CPA guide covers the same logic for other platforms.

The link between ads and organic rank#

Amazon's organic search ranking is influenced by sales velocity and conversion, among other factors. Advertising can increase sales, which may support organic rank, which in turn generates sales without ad cost. This is why many sellers invest heavily at launch and reduce spend as organic position strengthens.

The relationship is real but not guaranteed, and Amazon does not publish how its ranking works in detail. Watch TACoS and organic rank for your key terms over time to see whether advertising is building lasting position or simply renting it.

Listing quality first#

Structuring an account#

Organise campaigns around products and intent, not just ad types. Separate brand terms, which protect your own sales, from category terms, which win new customers, and from competitor terms, which win share at higher cost. Each has a different acceptable ACoS. Group products with similar margins so a single target makes sense, and use clear naming so search term reports can be read at a glance.

Bidding and placements#

Amazon offers several bidding approaches, including fixed bids and dynamic options that raise or lower bids depending on the likelihood of a sale, plus adjustments by placement, such as the top of search results or product pages. Names and options change, so check the current Amazon Ads documentation before relying on any one setting.

Placement reports are worth reading closely. The top of the first search results page often converts very differently from product page placements. If one placement converts well and another poorly, adjust placement modifiers rather than lowering the whole campaign's bids, which would penalise the good traffic along with the bad.

Treat bids as the last lever, not the first. When a product's advertising is unprofitable, check in order: whether the listing converts, whether the search terms are relevant, whether the price is competitive on the day, and only then whether the bid is too high. Lowering bids on a listing that does not convert simply buys fewer of the same unprofitable clicks.

Seasonality and sale events#

Marketplace demand concentrates around sale events and festive seasons, and competition for ad placements rises with it. Plan for these periods weeks in advance: build stock, refresh listings, set budgets that will not run out by mid-morning, and decide in advance what ACoS you will accept in exchange for volume and rank.

After the event, review which terms and products gained organic position and which did not. The real return on event spending often shows up in the weeks afterwards, if rank gained during the peak holds. Our guide to festive sale marketing covers the wider planning.

Amazon in the wider marketing plan#

For many consumer brands, Amazon is both a sales channel and a search engine where buyers compare products. Advertising there sits alongside your own D2C website and other marketplaces. Decide how each channel's role differs, how pricing stays consistent, and how to measure the effect of off-Amazon advertising on Amazon sales. Our guide to marketplace marketing covers the broader strategy.

Published by Fabulous.Media, a network of specialist marketing agencies. Updated 9 October 2026. Platform features change often; check current official documentation before acting on platform-specific detail.