Performance Max
Performance Max (PMax) is Google’s goal-based campaign type that serves across Search, Shopping, YouTube, Display, Discover, Gmail, and Maps from a single campaign, with targeting and placement decided by the algorithm.
PMax inverts the traditional control model: instead of choosing keywords and placements, you supply inputs — feed, creative assets, audience signals, conversion values — and the system decides where to spend. That makes input quality the entire game; a PMax campaign fed revenue-blind values and thin creative optimizes confidently toward the wrong goal.
The known failure modes are brand cannibalization (PMax harvesting brand searches and reporting them as wins — control with brand exclusions), channel opacity, and margin-blind bidding. Structure by margin band or product role rather than one catch-all campaign so targets can reflect real economics.
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