Exact, phrase, and broad match explained for KDP authors — what each one does, when to use each, and how to structure your campaigns so different match types work together rather than against each other.
| 9-minute read | Beginner · Intermediate |
Match types determine how closely a reader’s search query must match your keyword for your ad to appear. Getting match types right is the difference between precise, efficient targeting and broad, wasteful spending. For the full advertising foundation, see our complete guide to Amazon Ads for authors.
Exact Match
Exact match is the most precise match type. Your ad appears only when a reader searches for your exact keyword or very close variants (primarily plurals and minor spelling variations). If your keyword is “cosy mystery British detective,” your ad appears for “cosy mystery British detective” and “cosy mysteries British detectives” — but not for “British detective cosy mystery series” or “cosy mystery books.”
Exact match gives you the highest control and typically the best ACoS, because every impression is for a closely related search. The limitation: lower volume. Use exact match for keywords you have already proven convert at acceptable cost — terms harvested from your Search Term Report with a sales history behind them.
Phrase Match
Phrase match shows your ad for searches that contain your keyword phrase in that order, with additional words before or after. If your keyword is “cosy mystery,” your ad appears for “best cosy mystery novels,” “cosy mystery series for beginners,” and “cosy mystery British detective” — but not for “mystery cosy” (wrong order) or “detective mystery cosy” (words inserted in the middle).
Phrase match is broader than exact but more controlled than broad. It is effective for capturing variations of high-performing keywords and for testing new keyword ideas before committing them to exact match.
Broad Match
Broad match shows your ad for any search containing your keyword terms in any order, along with related terms. If your keyword is “cosy mystery,” your ad might appear for “easy mystery books,” “light crime fiction,” or “mystery novels for beginners.” Broad match generates the most impressions and the most discovery — but also the most irrelevant traffic.
Broad match is useful early in a campaign for discovering new converting search terms. It requires aggressive negative keyword management to remain efficient. Never rely on broad match alone without active monitoring of your Search Term Report.
Comparing the Three
| Match type | Reach | Control | Best used for |
|---|---|---|---|
| Exact | Narrow | Highest | Proven converters from Search Term Report |
| Phrase | Medium | Medium | Keyword variations and controlled discovery |
| Broad | Wide | Lowest | Early discovery; requires active negative management |
Structuring Campaigns by Match Type
Separate campaigns or ad groups by match type so you can track performance independently and set different bids. A proven converting keyword bidding at £0.35 exact match is a different investment from the same keyword bidding at £0.20 broad match for discovery. Combining them in the same ad group obscures which match type is driving results.
Using Negative Match Types
Negative keywords also use match types. Negative exact blocks only the precise query. Negative phrase blocks any search containing your negative phrase in order. For most book advertising negative use cases (blocking irrelevant terms that spend without converting), negative exact is sufficient and precise. Use negative phrase to block entire categories of irrelevant searches — for example, adding “free” as a negative phrase match to stop your ads appearing for searches like “free cosy mystery books.”
Match Types in Automatic Campaigns
Automatic campaigns use their own internal match logic through the four sub-types (Close Match, Loose Match, Substitutes, Complements) rather than the exact/phrase/broad framework. The Search Term Report from your automatic campaign shows which actual search queries triggered your ad, and these can then be added to your manual campaigns with appropriate match types — typically exact match for confirmed high converters and phrase match for promising terms you want to explore further.
Your ads bring readers to your book. Manuscript proofreading before publishing from Vappingo ensures the book those readers find is error-free and worthy of the five-star reviews that strengthen your ad performance over time.
