Google Ads Performance Max (PMax) Optimization Checklist for High ROAS

### Unlocking Maximum ROAS with Performance Max Google Performance Max (PMax) uses machine learning to serve ads across Search, YouTube, Display, Discover, Gmail, and Maps. However, without strict controls, budget often bleeds into low-converting display placements. ### The PMax Optimization Checklist 1. **Exclude Irrelevant Placements**: Apply placement exclusion lists to block spam mobile gaming apps and low-quality web portals. 2. **Provide High-Value Audience Signals**: Feed first-party customer email lists, high-intent search terms, and past converter profiles. 3. **Run Asset Group A/B Tests**: Compare lifestyle hero images against product-focused graphic assets. 4. **Audit URL Expansion**: Disable URL expansion if you are driving traffic to specific high-converting landing pages.