Mastering Performance Max: A Guide for Businesses
Updated: Oct 7
Understanding Performance Max Ads
Most advertisers assume their ads appear alongside relevant content, such as industry blogs, news sites, or YouTube videos tied to their audience. However, with PMax, ads appear across all of Google's advertising channels from a single campaign, including YouTube, Display Network, Search, Discover, Gmail, and Maps. Designed to drive conversions, PMax uses AI to place ads on websites, mobile apps, and video content. Google promotes it as a solution that allows you to find more converting customers across its channels.
Unlike traditional campaigns where you select your targeting, PMax decides autonomously where to serve your ads based on signals and conversion goals. While this can maximize scale, it also means your e-commerce campaign could be reaching users who are actively trying to fall asleep.
The Risks of Low-Quality Placements
Low-quality placements can inflate your impression and click counts while delivering little to no conversion value.
Examples of Low-Quality Placements
Here are some examples of placements that tend to drain the budget without delivering results:
| Placement Type | What It Looks Like | Why It’s a Problem |
|----------------------------|----------------------------------------------------------|------------------------------------------|
| Sudoku & Puzzle Sites | Brain games, word searches, casual puzzles | Low intent, frequent accidental clicks |
| Kids & Lullaby Content | Nursery rhymes, cartoons, children’s YouTube channels | Irrelevant audience, poor conversion rates |
| Sleep & Meditation Videos | Ambient sounds, white noise, sleep playlists | Passive listening, little to no engagement |
| Mobile Gaming Apps | Free-to-play games, in-app ads | High volume, low-quality traffic |
| Clickbait Content Farms | “You won’t believe…” articles, viral-style sites | Low trust, poor user intent |
How to See Where Your Ads Are Running
One place to start is the “Where ads showed” report inside Google Ads. You can find it under Insights and Reports, which provides a view into websites, apps, and YouTube placements tied to your campaigns.
Another option is the Report Editor, allowing you to build a simple table with placements and impressions that you can sort and scan quickly. Once you export it, you'll start to see patterns, especially when looking at a 30- or 90-day window.
How to Exclude Placements
To exclude a placement, navigate to Campaign Settings, then Brand Safety and Placement Exclusions. You can also manage them at the account level by going to Tools, Shared Library, and Placement Exclusion Lists.
Pro Tip
Build a shared placement exclusion list at the account level so exclusions apply automatically to all current and future PMax campaigns.
Excluding Mobile Apps
Another proactive option is to exclude mobile apps altogether. Instead of excluding mobile apps one placement at a time, you can exclude mobile apps across your entire account. To do this, go to Campaigns > Content > scroll to Exclusions > Edit exclusions. Here, you can choose Account, Campaign, or Ad group. We recommend "Account" > Browse > App categories and opting out of at least gaming apps.
How Often Should You Check Placement Reports?
Placement data accumulates over time, and new inventory is constantly being added by Google. This means you need a regular review schedule to spot and address problem placements.
A monthly review is recommended for most accounts to allow you to exclude problem placements before they consume your budget. For higher-spending accounts of $5,000 or more per month, a biweekly or weekly review could be appropriate.
Add placement review to your standard account maintenance checklist alongside search term reviews and asset performance checks. Spend 15-20 minutes on the review.
The Bottom Line
Performance Max and its automated features are powerful but require careful monitoring. Regularly auditing your placements and building out exclusion lists is a simple, high-leverage optimization. A quick, regular check of placements can uncover wasted spend, improve traffic quality, and give the algorithm better signals over time.
By mastering these strategies, you can significantly boost your online advertising performance and achieve measurable growth through highly optimized Google and Microsoft Ads campaigns.
