What is Performance Max?

Performance Max (PMax) is a Google Ads campaign type that runs one goal-based campaign across all Google surfaces — Search, Shopping, YouTube, Display, Discover, Gmail, and Maps — using automated bidding and asset mixing. You supply assets and a conversion goal; Google's AI assembles and places the ads.

The mechanics

PMax shifts the advertiser's job from placement management to asset supply and conversion signal quality: the algorithm can only assemble ads from what you give it. Asset groups hold headlines, descriptions, images, and videos around a theme, and audience signals steer (but don't restrict) targeting. For ecommerce, PMax is tightly coupled to the Merchant Center feed and effectively succeeded Smart Shopping.

Signals that matter

• Good: every asset group is fully stocked, including real vertical and horizontal video, not auto-generated filler
• Good: accurate conversion tracking with values, since PMax optimizes to the signal you feed it
• Bad: judging the campaign after a few days — automated bidding needs a learning period before results stabilize

Putting it to work

PMax quality tracks asset quality: thin asset groups get Google's auto-generated placeholders while rich ones get properly assembled ads across every surface. Generating a full spread of images and short vertical videos with Polaris inside Claude is a practical way to keep asset groups saturated and refreshed as combinations fatigue. See the full ecommerce ads glossary, or put it into practice with the Polaris AI UGC ad generator.