Broad, Phrase, Exact: Amazon Keyword Match Types Explained

What are keyword match types?

When you enter a keyword in an Amazon PPC campaign, you have to define how closely a customer's search query must match your keyword. That's exactly what the so-called match types govern. Amazon offers you three options: broad match, phrase match and exact match.

Each match type has a different reach. Broad match is the widest filter and captures the most search queries. Exact match is the narrowest and matches only very specific queries. Phrase match sits in between. The choice of match type directly influences how many impressions you get, how relevant the traffic is and how efficiently you use your budget.

Understanding match types is crucial because it forms the basis for your entire campaign architecture. Without this knowledge, you burn budget because broad campaigns generate too many irrelevant clicks, or you leave potential on the table because exact campaigns deliver too little traffic.

Broad Match: maximum reach

Broad match is the match type with the greatest reach. If you enter the keyword "men's running shoes" as broad match, your ad can appear for a wide range of related search queries. Amazon takes into account synonyms, related terms, word reorderings and so-called close variants.

Which search queries does broad match trigger?

For a broad match keyword like "men's running shoes," your ad could appear for the following search queries:

• "running shoes men" (word reordering)
• "jogging shoes men" (synonyms)
• "men's sports shoes for running" (related terms)
• "men's running shoe size 9" (singular + addition)
• "laufschuhe herren" (foreign-language variants, depending on marketplace)

Close variants in broad match

Amazon extends broad match with close variants automatically. Close variants include plural forms, spelling mistakes, word-stem variants and close synonyms. You have no direct influence over this extension. This means broad match can also trigger for search queries you didn't explicitly book.

That's exactly why broad match is both the most powerful and the most dangerous match type. It's excellent for keyword research and discovering new search terms. But without regular monitoring and setting negative keywords, it can quickly lead to high wasted spend.

Phrase Match: controlled relevance

Phrase match is the match type most sellers underestimate. It offers a good balance between reach and relevance. With phrase match, the search query must preserve the meaning of your keyword, but additional words may appear before or after the keyword.

For the keyword "men's running shoes" as phrase match, your ad could appear for these searches:

• "men's running shoes waterproof" (addition at the end)
• "best men's running shoes" (addition at the front)
• "men's running shoes buy cheap" (additions at the front and end)
• "running shoes men" (word reordering with the same meaning)

Your ad would not appear for searches like "women's running shoes" or "men's hiking shoes," because the core meaning would be changed.

Phrase match vs. broad match: the difference

The central difference lies in fidelity to meaning. Broad match can trigger on synonyms and strongly related terms, while phrase match stays closer to the core meaning of your keyword. In practice this means: phrase match delivers more relevant clicks, but fewer of them.

Phrase match is especially useful for keywords where you have a good idea of the search intent but don't yet know all the long-tail variants. It captures the qualified extensions without watering down the meaning.

Exact Match: maximum precision

Exact match is the most restrictive match type. Your ad appears only when the search query matches your keyword exactly or is a very close variant of it. Amazon also allows close variants like plural forms and typos with exact match, but no additions or synonyms.

For the keyword "men's running shoes" as exact match, your ad appears only for:

• "men's running shoes" (exact match)
• "men's running shoe" (singular as a close variant)
• "running shoes men" (word reordering without a change in meaning)

Exact match offers the highest control over your budget. You know exactly which search queries your ad appears for and can control bids very precisely. The downside: reach is limited. Exact match is therefore mainly suited to keywords that demonstrably convert well and where you're aiming for maximum efficiency.

When do you use which match type?

The choice of the right match type depends on your goal, the stage of your product and your budget. Here's a clear orientation:

Goal	Recommended match type	Rationale
Discover new keywords	Broad Match	Maximum reach to find unknown search terms
Test long-tail variants	Phrase Match	Captures qualified extensions without spreading too wide
Scale top keywords	Exact Match	Full bid control on proven performers
Product launch	Broad + Phrase	Quickly build reach and learn at the same time
Lower ACoS	Exact Match	Advertise only demonstrably converting keywords

In practice, you'll almost always use all three match types at the same time. The key lies in the combination and in a clear workflow that systematically migrates keywords from broad through phrase to exact.

Combining match types in your campaign structure

The most effective way to use match types is the so-called keyword graduation model. Here you work with separate campaigns for each match type and move keywords from one match type to the next based on their performance.

The 3-stage model

Stage 1: Broad match campaign (discovery)
Here you start with your base keywords as broad match. The goal is to discover as many relevant search terms as possible. You deliberately set the bid lower, because you know not every click will convert. You check the search term report regularly.

Stage 2: Phrase match campaign (qualification)
Keywords that show good performance in the search term report of the broad campaign (at least 2 orders at an acceptable ACoS) are moved into a separate campaign as phrase match. At the same time, you add the keyword as negative exact match in the broad campaign so the traffic no longer accrues there.

Stage 3: Exact match campaign (performance)
The top performers from the phrase campaign finally move into an exact match campaign. Here you raise bids deliberately, because you know these keywords convert. The keyword is blocked as negative exact match in the phrase campaign.

Match type migration: step by step

A clean keyword migration is the difference between a chaotic and a profitable campaign structure. Here's the concrete process:

1. Download the search term report: filter by terms with at least 2 orders in the last 14 days.
2. Check the ACoS: is the search term's ACoS below your target ACoS? Then it's a candidate for migration.
3. Create the keyword at the next stage: add the keyword as phrase match (if it was broad before) or as exact match (if it was phrase before).
4. Set a negative keyword: add the keyword as negative exact match in the source campaign. This prevents both campaigns from competing for the same traffic.
5. Adjust the bid: the bid in the new campaign should be higher than in the old one, since you're now bidding on a better-qualified keyword.
6. Monitoring: observe the migrated keyword's performance for at least 7 days before making further adjustments.

This process should happen regularly. Ideally weekly, but at least every two weeks. The more consistently you carry out the migration, the more efficient your campaign structure becomes over time.

Common mistakes with match types

Even experienced sellers make mistakes with match types that cost budget unnecessarily. Here are the most common pitfalls:

Mistake 1: Mixing all match types in one campaign

If you have broad, phrase and exact match in a single campaign, you can't control which match type gets the traffic. Amazon distributes the budget internally, and you lose the ability to control bids differentiated by match type. Solution: separate the match types into separate campaigns.

Mistake 2: Not setting negative keywords

If you have a keyword as exact match in a performance campaign but keep running the same term as broad or phrase match in another campaign, you compete with yourself. The broad campaign captures traffic that should actually go to the exact campaign, and at a lower bid. Result: you lose the auction against yourself.

Mistake 3: Broad match without regular search term analysis

Broad match without monitoring is like an open tap: a lot flows, but not necessarily where you need it. Without weekly search term analysis, you collect irrelevant clicks and waste budget. Broad match only works in combination with active management.

Mistake 4: Using exact match too early

If you go straight to exact match only on a new product, you drastically limit your reach. You potentially miss profitable long-tail keywords that you'd only discover through broad or phrase match. Exact match is the last stage, not the first.

Aligning match types with bidding strategies

The bid level should be guided by the match type. The logic behind it is simple: the narrower the match type, the higher the expected conversion rate, the more you can bid per click.

As an orientation, you can use the following gradation:

• Broad Match: base bid (e.g. $0.50)
• Phrase Match: base bid + 20-30% (e.g. $0.60 to $0.65)
• Exact Match: base bid + 40-60% (e.g. $0.70 to $0.80)

This gradation reflects the fact that exact match keywords have already been confirmed as converting through the migration. You bid more because you know these clicks are more valuable.

Beyond that, you should factor in the placement modifiers. For exact match keywords that demonstrably convert best at the top-of-search position, you can raise the placement modifier for "Top of Search" to deliberately advertise in this premium position.

Summary: use match types as a system

Match types aren't a feature you set once and then forget. They're a system you have to manage actively. The most important points summarized:

• Broad match serves keyword discovery and always runs with lower bids and active search term monitoring.
• Phrase match qualifies keywords further and captures relevant long-tail variants.
• Exact match is your performance level for proven keywords with maximum bid control.
• Separate campaigns per match type are mandatory so you can control budget and bids cleanly.
• Negative keywords prevent cannibalization between the match types.
• The regular migration of keywords through the match type stages is the engine for long-term growth.

If you implement this system consistently, you'll build a campaign structure over time that becomes ever more efficient. Every week new keywords are discovered, qualified and moved into the right stage. The result: rising revenue at a falling ACoS.