Case Study: Multi-Touch Attribution Modeling

The Challenge

A SaaS company was over investing in paid search because it appeared to be the primary driver of leads. However, the last-click model was ignoring the role of organic content in the early research phases of the 6-month sales cycle.

The Zero Waste Solution

1. Cross-Channel Data Stitching: Integrated GA4 BigQuery exports with CRM data to map the complete user journey, moving beyond fragmented “session-only” views.
2. Attribution Logic Overhaul: Deconstructed the “Last Click” bias by implementing a data-driven model that correctly assigns value to top-of-funnel educational content.
3. Budget Rationalization: Visualized the SEO-to-Revenue pipeline in a custom dashboard, providing stakeholders with clear evidence of organic search’s multi-touch impact.

Tools Used

• GA4 BigQuery Export (Raw Data Interrogation)
• SQL (User-Stitching & Data Joining)
• Looker Studio (Attribution Comparison Dashboards)
• Microsoft Excel (Assisted/Last Click Ratio Modeling)

The Business Impact

• Revenue Discovery: Identified an additional $65,000/month in organic value previously misattributed to paid search.
• Strategic Expansion: Secured budget approval for a 40% increase in content production by proving long-term assisted conversion value.
• Lead Accuracy: Verified that 65% of converted leads originated from Organic Search, correcting a significant under-reporting error.

The Deep Dive

• The “Last Click” Fallacy I audited the existing reporting structure and found that Paid Search was receiving 100% of the credit for conversions that actually started with a Day 1 Organic discovery.

Visualization: Mapping the 16-day journey from Organic discovery to Paid conversion.

• Data Modeling & Interrogation Using SQL to join touchpoints, I compared the traditional “Last Click” revenue against a “Data-Driven” model. The results showed that Organic Search was functioning as the primary “Opener” for the entire ecosystem.

Model A: Last Click

Organic Search undervalued at $25k. Paid Search claims 100% credit.

Model B: Data-Driven

True organic value of $90k revealed by tracing the full path.

• Assisted/Last Click Ratio I calculated the “Assisted Ratio” for every channel. A ratio of 2.58 for Organic Search confirmed that for every 1 direct conversion, it assisted 2.5 others—proving it was the “engine” of the site.

/* SQL: Calculating Assisted Conversion Ratios */
SELECT 
    channel_grouping,
    last_click_conversions,
    assisted_conversions,
    ROUND(SAFE_DIVIDE(assisted_conversions, last_click_conversions), 2) AS assisted_ratio
FROM `analytics_data.attribution_summary`
WHERE conversions > 0
ORDER BY assisted_ratio DESC;

• Strategic Re-Alignment Based on these insights, I transitioned the SEO strategy from a “defensive” posture to an “expansion” model, focusing on the informational topics that drove the highest assisted ROI.