Every marketing team has an attribution model, whether they've chosen one deliberately or inherited the platform default. The trouble is that most haven't been reviewed since the day they were switched on — and the assumptions baked into last-click reporting rarely match how a customer actually moves through a considered purchase.
Start with the buying journey, not the software
Before choosing a model, map how your customers actually behave: how many touchpoints typically precede a purchase, how long the cycle runs, and which channels tend to appear early versus late. A financial services client with a six-week research phase needs a very different model to a DTC brand converting on impulse within a single session.
We usually start this with a blunt exercise — pulling twenty recent converting paths from GA4 and looking at them by hand. It is unglamorous, but it surfaces patterns that dashboards summarise away.
Data-driven models are only as good as the data underneath them
Platform-provided data-driven attribution can be genuinely useful, but it depends on volume and clean event data. If your conversion tracking has gaps — missing purchase events, duplicated fires, inconsistent parameters — the model will confidently produce misleading answers. We treat a tracking audit as a prerequisite to any attribution conversation, not an optional extra.
Build a model your finance team would sign off
The test we apply to any attribution set-up: could you explain it, in one paragraph, to someone who controls the budget but doesn't work in marketing? If the answer requires ten minutes of caveats, it's too fragile to make decisions on. Simplicity that's trusted beats sophistication that's ignored.
A practical starting checklist
- Audit your current event tracking for duplication, gaps and misfires before touching the attribution model itself.
- Map ten to twenty real converting paths manually to sanity-check what the model reports.
- Choose a model that matches your actual sales cycle length, not the platform default.
- Revisit the model quarterly — customer journeys shift as channels and campaigns change.
If you'd like a second opinion on your current set-up, our team runs attribution audits as a standalone engagement — get in touch to discuss scope.
