Broad match is the Google Ads keyword match type that lets ads serve on searches related to the keyword's meaning — not just its literal wording — relying on Google's AI to judge relevance.
Definition
Modern broad match uses intent signals — the user's other recent searches, landing page content, keywords in the ad group — to match queries semantically. Google recommends pairing it with Smart Bidding, because auction-time bidding is what keeps loosely-matched queries efficient: the model bids low or not at all when predicted conversion odds are poor. Without that pairing, broad match is how budgets historically got burned.
Why it matters
Broad match plus Smart Bidding is Google's intended modern architecture — keywords become directional guidance rather than strict controls. It expands into converting queries exact match never sees, but it demands hygiene: negative keywords, search term review, and accurate conversion values are what keep the expansion honest.
In agentic execution
Query hygiene is exactly the kind of high-frequency, low-glamour execution that decays when humans are busy — Adlyse's agents execute search term exclusions and match-type structure changes continuously, each one human-approved and logged.
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