Attribution in 2026 is harder than ever (cookie deprecation, iOS privacy, ATT) — but the brands that solve it win 30-50% better marketing efficiency than the ones that don’t.
Three Models Worth Running
1. Last Non-Direct Click (Quick & Dirty)
Good for daily reporting and channel comparisons. Use as a baseline, not source of truth.
2. Data-Driven Attribution (DDA)
Google Ads and GA4 will compute it automatically given enough volume (>3K conversions per month minimum).
3. Marketing Mix Modelling (MMM)
For brands spending >SAR 200K/month, MMM gives you the only privacy-resilient channel-level ROI. Tools: Robyn (free), Meta Lift, or build it.
The Practical Stack for 2026
- Server-side tracking via GTM Server (recovers 25-40% of lost iOS conversions)
- Conversion API (CAPI) on every paid platform
- Enhanced Conversions for Google Ads
- First-party data loaded into ad platforms
- MMM as a quarterly sanity check
What to Stop Doing
- Trusting last-click reports as gospel
- Optimising channels in isolation
- Cutting brand spend because last-click attributes “nothing” to it
Get attribution right and your existing budget delivers 30-50% more revenue without spending more.