Performance Max
A Google campaign type that runs everywhere (search, YouTube, Gmail, Maps, partner sites) from a set of visuals and texts.
Technical meaning
A campaign driven by Google's automation, which decides alone where and to whom to show ads. Effective when conversion signals are clean and plentiful, opaque otherwise. Contrast only activates it after a stable Search campaign, with brand exclusions and quality conversions, never as a first channel.
See Google and Meta campaigns