This is the question we get asked most often by new clients moving budget from a search-only strategy: should new spend go into Performance Max, or stay in tightly controlled Search campaigns? The honest answer is that most accounts need both, just not in equal proportion.
What each campaign type is actually built for
Search campaigns give you granular control over the exact queries you bid on, full visibility into the search terms driving clicks, and the ability to exclude irrelevant traffic aggressively. Performance Max trades that control for reach — Google's automation places your ads across Search, Display, YouTube, Gmail, and Shopping, using signals you provide to find converting users wherever they are.
A quick side-by-side of where each campaign type has the edge.
When Search should get the bigger share
If your business relies on a narrow set of high-intent, high-value keywords — a legal service, a specific B2B software category, an emergency home-repair query — Search campaigns typically deliver a lower and more predictable cost-per-lead. You can see exactly which search terms convert, exclude the ones that don't, and protect your budget from Performance Max's broader, sometimes less predictable targeting.
When Performance Max earns its budget
Once an account has a healthy amount of conversion data, Performance Max tends to unlock volume that Search alone can't reach — particularly for ecommerce and businesses with broader appeal. It's also far less labor-intensive to manage day to day, since Google's automation handles bid and placement decisions. The trade-off is reduced visibility into exactly which placements are driving results.
Our typical split
For most of the accounts we manage, we start with 60–70% of budget in Search for the highest-intent terms, and layer in Performance Max at 30–40% once there's enough conversion volume (generally 15–30 conversions a month) for Google's automation to learn effectively. We monitor overlap closely — Performance Max can sometimes cannibalize branded search traffic that would have converted for less through a dedicated Search campaign.
Key takeaways
- Don't launch Performance Max before your account has meaningful conversion history
- Keep a dedicated branded Search campaign running even alongside Performance Max
- Review Performance Max's asset group performance monthly — it still needs oversight, just less of it
The businesses that get this wrong usually make an all-or-nothing bet on one campaign type. The ones that get it right treat Search and Performance Max as complementary tools, each doing the job it's actually good at.