Performance Max is Google Ads' all-channels-from-one-campaign format. You provide assets — headlines, descriptions, images, videos, sitelinks, audience signals, conversion goals — and the algorithm decides where, when, and to whom to show ads across Search, Display, YouTube, Discover, Gmail and Maps. PMax replaces several legacy campaign types and is now Google's default recommendation for most goals.
When it works
- Goal is end-of-funnel conversions and you have 50+ per 30 days for the algorithm to learn from
- Healthy first-party data flowing in via Enhanced Conversions or server-side tagging
- A diverse creative asset library — at least 5 headlines, 5 descriptions, 10 images, 1 video
- Clear conversion-value tracking so the algorithm can optimise toward revenue, not raw conversion count
Common operator complaints
- Black-box reporting — you can see what spent but not always where (placement-level transparency improved in 2024 but still partial)
- Cannibalisation of brand search — PMax will happily bid on your own branded queries; use brand exclusions to prevent this
- Sucks budget from other campaigns — needs deliberate budget separation if you're running PMax alongside legacy Search