Match Type (Broad, Phrase, Exact)
Match type controls how strictly an Amazon PPC keyword must align with the shopper's search query for the ad to enter the auction. The three modes — Broad, Phrase, and Exact — define the discovery-to-profit pipeline of the account.
Match type is the rule that decides whether a shopper's search query is a "match" for a keyword you've added to an Amazon PPC campaign. Three modes exist — Broad Match, Phrase Match, and Exact Match — plus their negative counterparts (Negative Keyword).
Match type is not a "setting to pick once." It defines the entire pipeline of the account: broad campaigns discover, exact campaigns harvest the winners, negatives prevent overlap. Single-match-type accounts fail by design.
The pipeline
Auto / Broad → Search Term Report → Exact (Harvested)
(discover) (analyse) (profit)
The three positive match types correspond to the three stages of this pipeline. Each carries a different CVR profile and therefore a different bid:
| Match type | Trigger rule | CVR profile | Strategic role |
|---|---|---|---|
| Broad | Tokens in any order + synonyms, plurals, related terms | Lowest | Discovery |
| Phrase | Tokens in order + extras before/after | Middle | Bridge / compound semantics |
| Exact | Exact query + close variants (plurals, typos) | Highest | Profit layer |
Exact is where the money is made; broad is what feeds exact; phrase is a small bridge layer for cases where word order carries semantic meaning ("women's running shoes" ≠ "shoes for women running").
Bidding by match type
Each match type carries a different CVR for the same root keyword, so each requires a different base bid:
Bid_exact = ASP × CVR_exact × Target ACOS
Bid_phrase = ASP × CVR_phrase × Target ACOS (≈ 60–80% of exact bid)
Bid_broad = ASP × CVR_broad × Target ACOS (≈ 30–50% of exact bid)
Bidding the same amount across all three is the single most common error in the format.
Negative match types
The mirror of positive matching is Negative Keyword management, which has two sub-types — Negative Exact and Negative Phrase. There is no Negative Broad in Sponsored Products. Negatives are the cleanup tool of the harvest loop; without them, broad-match parents keep bidding on terms their exact-match children already won.
Close variants
Since 2022, Amazon's match-type definitions all include "close variants" — plurals, misspellings, common grammatical variations. Exact match for bluetooth earbuds will trigger on bluetooth earbud and blutooth earbuds. This is expected behaviour, not a bug; the negative keyword layer handles the edge cases.
Common mistakes
- Single-match-type accounts. Broad-only has no profit layer; exact-only has no discovery engine.
- Mixing match types in the same ad group. Bids become uninterpretable; the report rollup loses meaning. One ad group per match type per theme.
- Bidding the same on broad and exact. Over-pays for discovery, under-pays for profit.
- Forgetting negatives. Broad and exact both bid on the harvested term, doubling spend per conversion.