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Q: What is Google Performance Max?

Google Performance Max (PMax) is a campaign type that uses machine learning to automatically distribute your ads across all of Google's inventory — Search, Shopping, YouTube, Display, Discover, Gmail, and Maps — from a single campaign. You provide assets (text, images, video, product feeds) and Google's algorithm decides where and when to show them to maximize your conversion goal.

Q: When should I use Performance Max?

PMax works best for ecommerce advertisers with a product catalog, lead gen businesses with clear conversion goals and sufficient conversion data, and advertisers looking to expand reach beyond their current campaign types. It requires a minimum of 30–50 conversions per month to optimize effectively. Without enough conversion data, the algorithm can't learn and performance suffers.

Q: What are the main disadvantages of Performance Max?

Limited transparency is PMax's biggest limitation — you can't see which placements or search terms are driving conversions, which makes diagnosis difficult when performance declines. You also have less control over where your ads appear and can't exclude specific placements the way you can with dedicated campaign types. Budget management requires careful monitoring to avoid PMax cannibalizing your Search campaigns.

Q: Does Performance Max replace Smart Shopping?

Yes. Google migrated all Smart Shopping campaigns to Performance Max in 2022. PMax is the successor campaign type for ecommerce advertisers who were previously using Smart Shopping, with expanded reach across more Google properties.

Q: How do I set up Performance Max correctly?

The most important setup decisions are asset group structure (organize by product category or theme, not all products in one group), audience signals (provide your best customer lists and website visitor segments to accelerate learning), and conversion goals (only include conversions that represent real business value — not soft signals like page views). Use brand exclusions if you have separate branded Search campaigns to prevent cannibalization.

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