Just finished a cost-alloc project and freed up some time to finally tackle marketing attribution. Our startup's been flying blind with last-click in GA4, and it's a mess.
Need a tool that's:
- **Free or very cheap** (seed stage)
- **Handles multi-touch** (shifting from paid search)
- **Ideally has a data warehouse connector** (we're on BigQuery)
Looked at:
* **GA4's built-in modeling** (free but feels like a black box)
* **Attribution in Looker Studio** (manual, but maybe with our raw GA4 export?)
* **Open-source options** (like Attribution?)
What's the real-world pick for a lean team? Prefer something we can wire up with Terraform if possible.
Example of the GA4 export schema we're working with:
```sql
-- Example query we use for channel grouping
SELECT
traffic_source.name AS campaign,
COUNT(*) AS conversions
FROM `project.dataset.events_*`
WHERE event_name = 'purchase'
GROUP BY 1
```
#savings