Performance Max is a campaign type that complements search campaigns and helps to maximise performance across all of Google's channels using smart bidding and AI.
Benefits of Pmax
Helps to find new audiences across Google and its networks, to drive better results based on goals set. It also helps with reporting by indicating what performs well and how to optimise campaigns better based on the strategy.
When to use Pmax?
When a business has specific advertising goals, to get additional reach and complement search campaigns, to access all Google's channels using just one campaign.