Performance Marketing
Google Ads vs Meta Ads for eCommerce, and why it is the wrong question
Brands often ask whether to put their eCommerce budget into Google or Meta. It is a reasonable question with a frustrating answer, because the two platforms do different jobs. Treating them as rivals usually leaves money on the table.
Google captures existing demand
Search and Shopping reach people who are already looking. That intent is why Google tends to convert efficiently, and why it is often the safer place to start for a brand that already has some demand to capture.
The limit is that Google can only harvest demand that exists. It is less able to create new customers who were not already searching.
Meta creates demand
Meta puts a product in front of people who were not looking for it. That makes it the engine for growth beyond existing demand, but it also means the return is more sensitive to creative and to a clear funnel.
Judged only on last-click ROAS, Meta often looks worse than it is, because much of the demand it creates converts elsewhere, including on Google.
Why the split matters less than the system
The two channels feed each other. Meta creates demand that Google then captures, so cutting one can quietly hurt the other. The brands that scale well tend to plan both together and measure the combined result rather than fighting over last-click credit.
The practical question is not Google or Meta. It is what share of budget each should carry given the brand's current demand, margin and growth goal.
Key takeaways
- Google captures demand, Meta creates it. They are complementary, not interchangeable.
- Last-click ROAS understates Meta's contribution.
- Plan and measure the two channels as one acquisition system.