Search campaigns target keywords with text ads and give you control; Performance Max spreads across all of Google's inventory with automation and less transparency. Use Search for high-intent capture and control, Performance Max for broad prospecting with firm guardrails, and usually run both.
What is the difference between Search and Performance Max?
A Search campaign shows text ads to people searching specific keywords on the results page: you choose the keywords, write the ads, set the bids, and see the search terms. Performance Max is a single, goal-based campaign that, in Google's words, lets you access all of your Google Ads inventory, Search, Display, YouTube, Gmail, Maps and Discover, from one campaign, driven by automation. The trade is the same one that runs through all of paid search: control and transparency versus reach and automation.
| Dimension | Search | Performance Max |
|---|---|---|
| Targeting | Keywords you choose | Audience signals + automation |
| Where it shows | The search results page | All Google inventory |
| Control | High: ads, bids, negatives | Low: goals, assets, signals |
| Transparency | Search terms visible | Limited; mostly a black box |
| Best for | High-intent, controlled capture | Broad prospecting at scale |
When should you use Search campaigns?
When intent and control matter. Search is how you capture people who are actively looking for what you sell, on your money keywords and your brand, with the levers to shape it: the exact keywords, the ads, the bids, the negatives, and the search terms report to see what you actually paid for. If a query is high-value or high-intent, you generally want it in a Search campaign where you can see and steer it, not folded into automation.
When should you use Performance Max?
When you want reach beyond search and can feed the automation well. Performance Max earns its place for broad prospecting across Google's surfaces, and it can perform strongly, but only when the inputs are there: reliable conversion tracking (ideally with values), strong creative assets, and useful audience signals to point it in the right direction. Given those, it scales in a way manual campaigns cannot. Without them, it spends confidently in the dark.
How do you stop Performance Max wasting budget?
By putting guardrails around the automation instead of trusting it blind:
- Exclusions. Brand exclusions so it does not just harvest your own name, plus account-level negatives for irrelevant traffic.
- Good conversion goals. Value-based where you can, so it optimises for revenue, not just any conversion.
- Audience signals. Feed it your best-customer data to speed up and sharpen its learning.
- Watch the insights. Check the search-term and asset insights it does expose, and keep an eye on whether it is finding new customers or reselling ones you would have won anyway.
Should you run both together?
Usually, yes, with clear roles. Keep branded and high-intent search in controlled Search campaigns, and use Performance Max for broader prospecting with the guardrails above. The risk to manage is overlap: Performance Max can serve on the same queries as your Search campaigns, including your brand, and claim the credit. Structure the two so they complement rather than compete, exclusions on the Performance Max side, your valuable search protected in Search, and judge them on incremental results, not just the conversions each reports.
How does Limecube help?
Limecube works across both. It edits Performance Max asset groups, headlines, descriptions and final URLs, so you can improve PMax creative without wrestling the Google Ads interface, and it authors and pushes responsive search ads for your Search campaigns. Its analyser watches spend, bid strategy and impression share across the account, so overlap and waste surface early. It is part of running efficient Google Ads. The 7-day trial covers it.