Shopify + Google Ads Attribution: Beyond Last-Click ROAS
Google Ads takes credit for every branded search purchase. Causality Engine reveals which Google campaigns create new demand vs. which just capture existing intent.
Why Google Ads over-reports
- Branded search captures existing demand — customers who would've bought anyway get attributed to Google
- Google's data-driven attribution model is a black box that still favors Google channels
- Last-click attribution gives Google 100% credit when it's the final touch — ignoring discovery channels
- Smart Bidding optimizes for Google's attribution model, not your actual incrementality
- Shopping campaigns get credit for price-comparison clicks that would've happened organically
How Causality Engine fixes Google attribution
- Separates branded search (demand capture) from non-branded (demand creation) — see true incremental ROAS
- Causal inference measures what would've happened WITHOUT Google Ads — the real test of value
- Cross-channel Shapley values show Google's true contribution alongside Meta, TikTok, and email
- Identifies which Google campaigns create new customers vs. which cannibalize organic traffic
- No dependency on Google's attribution model — independent measurement from your own data
2-minute setup
Connect your Shopify store
One-click OAuth. Read-only order data access.
Link your GA4 property
We analyze session data across all channels — not just Google.
See real Google Ads incrementality
Discover which campaigns actually create demand vs. capture it.
Frequently asked questions
Can Causality Engine separate branded vs. non-branded Google Ads impact?
Yes. Our causal model distinguishes between campaigns that create new demand (non-branded, Discovery, YouTube) and those that capture existing demand (branded search, Shopping). This is critical for budget allocation.
Does this replace Google Analytics attribution?
It complements it. GA4 tells you what happened (which channels touched which users). Causality Engine tells you what caused what — which channels actually drove incremental sales that wouldn't have happened otherwise.
How does this work with Performance Max campaigns?
Performance Max is a black box inside Google. Causality Engine measures the total causal impact of your PMax spend from the outside, using your GA4 and Shopify data. You'll see whether PMax is truly incremental or just re-targeting existing demand.
Do I need to share my Google Ads account?
No. We only need your GA4 property and Shopify connection. We measure Google's impact from your own analytics data, not from Google's ad platform.
Stop guessing.Start knowing.
See which channels actually drive your revenue. Confidence-scored results in minutes — not months. Full refund if you don't see the value.
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