Amazon Automatic Campaigns: How to Use Them for Discovery
Automatic campaigns aren’t your performance engine — they’re your research lab. Used right, they hand you the exact keywords and products your manual campaigns should be built on.
An Amazon automatic campaign lets Amazon decide what to match your ad to — reading your listing to target relevant searches and products for you. Its real job isn’t to be your main earner; it’s to discover which terms and ASINs actually convert, so you can promote the winners into controlled manual campaigns. Run it on Down Only bidding and filter it hard with negatives.
01What an automatic campaign is
When you create a Sponsored Products campaign, Amazon asks whether you want automatic or manual targeting. Choose automatic and you hand the targeting decisions to Amazon: it reads your product’s title, description, and category, then matches your ad to searches and product pages it judges relevant. You don’t pick keywords. You set a budget and a bid, and Amazon does the rest — which makes auto campaigns the fastest possible way to get live and start generating data.
02The four targeting groups
Automatic targeting isn’t one blunt setting — it’s four distinct groups, and you can set a separate bid for each or pause the ones that don’t work:
| Group | Amazon matches your ad to… | Typical value |
|---|---|---|
| Close match | Searches closely related to your product (“stainless water bottle”) | Highest — your bread and butter |
| Loose match | Loosely related searches (“water container”) | Broader reach; watch spend |
| Complements | Detail pages of products that pair with yours (a gym bag page) | Good for cross-sell placement |
| Substitutes | Detail pages of similar or competing products | Conquesting; can get pricey |
Splitting bids by group is where beginners gain an edge. Close match usually deserves your highest bid; loose match and substitutes are where budget quietly leaks if you leave them at the default.
03Why you run auto: the discovery lab
The strategic point of an automatic campaign is discovery. Amazon shows your ad against a wide net of searches and products, and your search-term report then reveals which of them actually converted — often terms you’d never have thought to bid on yourself. That’s gold: real buyer language, validated by real sales, ready to become manual keywords.
This matters more in 2026 than ever. Amazon’s AI shopping assistant, Alexa for Shopping, now handles a meaningful share of searches in natural, conversational language. Exact-keyword structures miss those phrasings entirely — but a well-fed automatic campaign catches them, which is why “auto is just a budget drain” is outdated advice. With disciplined negatives, auto is a genuine discovery engine.
04Setting one up
Keep the first setup simple. Create a Sponsored Products campaign, choose automatic targeting, and pick your best listing-ready product. Set Dynamic bids — Down Only so Amazon lowers your bid on clicks unlikely to convert while you’re still learning (the one exception: if you’re launching for rank and Down Only starves you of impressions, start on Up & Down and accept a higher ACoS). Set a modest daily budget, split your bids across the four groups if you can, and give it a couple of weeks before judging anything. Auto campaigns need data before they mean anything.
05The harvest workflow
This is the loop that makes auto campaigns pay off — run it every week or two:
- Read the search-term report and find terms with sales and a healthy conversion rate.
- Harvest those winners into a manual exact-match campaign, where you control their bids precisely.
- Negate each harvested winner back in the auto campaign as a negative keyword, so auto stops spending on a term you’ve already captured — and keeps hunting for new ones.
- Prune the clear losers (clicks, no sales) with negatives too, so your budget only trains on high-intent traffic.
Done consistently, this turns a messy discovery campaign into a clean feeder that continuously supplies your manual campaigns with proven keywords.
06Bidding by group
Because the four groups convert differently, they deserve different bids. A sensible starting posture: bid highest on close match, moderately on complements (where cross-sell intent is real), and conservatively on loose match and substitutes until the data earns a raise. Substitutes in particular can be expensive — you’re bidding to appear on competitor pages — so treat that group as a controlled experiment, not an always-on spend. Full bidding mechanics, including placement modifiers, are in the bidding strategy lesson.
07Common mistakes
Three errors turn a useful auto campaign into a money pit. No negatives — without them, auto keeps paying for irrelevant matches indefinitely; this is the big one. Set-and-forget — auto needs the weekly harvest loop or it never earns its keep. And one flat bid across all four groups, which lets loose match and substitutes overspend while close match is under-bid. Fix those three and your automatic campaign becomes the quiet backbone of the whole account. Next, we’ll take the winners it surfaces and put them to work through keyword match types.
- Auto campaigns let Amazon target for you by reading your listing — fast to launch, great for discovery.
- Four groups — close match, loose match, complements, substitutes — each with its own bid.
- Their real job is to surface converting terms you harvest into manual exact campaigns.
- Start on Down Only, modest budget, and run the harvest-and-negate loop every 1–2 weeks.
- In 2026, auto catches the conversational searches exact-only structures miss — if you filter with negatives.
Frequently asked questions
What is an automatic campaign on Amazon?
It’s a Sponsored Products campaign where Amazon chooses what to match your ad to, based on your listing, instead of you picking keywords. You set a budget and bids, and Amazon targets relevant searches and product pages across four targeting groups.
Should I use automatic or manual campaigns?
Both, together. Automatic campaigns discover which terms and products convert; manual campaigns let you take those winners and control their bids. The standard setup runs one auto and one manual campaign per product, linked by negative keywords.
How long should I run an automatic campaign?
Indefinitely — keep it always-on as a discovery feeder, but review it every one to two weeks to harvest winners and add negatives. Give a new auto campaign at least two weeks of data before drawing conclusions.
What bid should I set for an automatic campaign?
Start near Amazon’s suggested bid on Dynamic bids — Down Only, then split bids by targeting group: highest on close match, conservative on loose match and substitutes. Adjust based on each group’s conversion data rather than raising everything at once.
Do automatic campaigns still work in 2026?
Yes — arguably better than before. Amazon’s matching has matured, and auto campaigns now catch the conversational, natural-language searches that exact-only structures miss. The key is disciplined negative keywords so the campaign stays efficient.
Or return to Module 3: Sponsored Products or the course hub.