MTA, MMM & Lift Studies: The Triangulation Approach

Why One Method Isn't Enough

Every measurement approach has blind spots:

Relying on any single method is like navigating with one eye closed. Triangulation gives you depth perception.

The Three Pillars of Measurement

1. Multi-Touch Attribution (MTA)

What it does: Tracks individual user journeys across touchpoints and assigns credit based on the path to conversion.

Best for:
- Daily/weekly campaign optimization
- Creative and audience testing
- Understanding customer journeys
- Real-time performance monitoring

Limitations:
- Only sees trackable touchpoints
- Correlation, not causation
- Privacy restrictions shrinking visibility

2. Marketing Mix Modeling (MMM)

What it does: Uses econometric analysis of aggregate data (spend, impressions, revenue) to estimate channel contribution over time.

Best for:
- Annual/quarterly budget allocation
- Understanding brand and offline channels
- Long-term strategic planning
- Privacy-compliant measurement

Limitations:
- 4-8 week refresh cycles
- Channel-level granularity only
- Requires significant historical data
- Sensitive to market changes

Includes offline, untracked, and long-term brand effects that MTA misses.

3. Incrementality Testing (Lift Studies)

What it does: Runs controlled experiments (holdout groups, geo-tests) to measure the true causal impact of marketing.

Best for:
- Validating MTA and MMM
- High-stakes budget decisions
- Testing new channels
- Challenging assumptions

Limitations:
- Point-in-time measurement
- Expensive (holdout = foregone revenue)
- Can only test one thing at a time
- Requires sufficient scale

How Triangulation Works

Triangulation doesn't just run all three methods—it connects them into a unified system.

The Triangulation Framework

Each method informs the others:

Real-World Triangulation Example

Here's how a $5M/year marketing team might use triangulation:

When Methods Agree vs. Disagree

When All Three Agree: High Confidence

When Methods Disagree: Investigate

Implementing Triangulation

Phase 1: Foundation (MTA)

Start with multi-touch attribution as your tactical layer:

Output: Daily/weekly actionable metrics for campaign optimization.

Phase 2: Strategy (MMM)

Add marketing mix modeling for strategic view:

Output: Quarterly strategic budget recommendations.

Phase 3: Validation (Incrementality)

Add incrementality testing to calibrate and validate:

Output: Calibration factors for MTA, validation for MMM.

Ongoing: The Triangulation Loop

Which Method for Which Decision

Common Triangulation Mistakes

1. Averaging the Numbers

❌ Wrong:
MTA says 25%, MMM says 15%, Incrementality says 10%
"Let's just say it's 17%"

✓ Right:
Investigate WHY they differ.
Incrementality is causal—weight it highest.
MTA at 25% suggests overcounting—find the cause.

2. Testing Only What Looks Good

❌ Wrong:
"Our brand campaign looks great in MTA.
 No need to test it."

✓ Right:
Test your best-performing channels.
If they're really that good, tests will confirm.
If not, you've found overcounting early.

3. One-Time Calibration

❌ Wrong:
"We tested Meta in Q1, got a 0.6x calibration factor.
 We'll use that forever."

✓ Right:
Calibration factors drift over time.
Re-test major channels annually at minimum.
Algorithm changes, creative changes, audience changes.

4. Ignoring Confidence Intervals

❌ Wrong:
"MMM says Search is 23% of revenue. Done."

✓ Right:
"MMM says Search is 23% ± 6% of revenue (17-29% range).
 Given this uncertainty, here's our confidence level..."

Triangulation Maturity Model

Most companies should target Level 2-3. Full triangulation isn't overhead—it's insurance against expensive allocation mistakes.

Summary

No single measurement method tells the whole truth:

The triangulation approach:

1. MTA for daily optimization — What to change today
2. MMM for budget allocation — Where to invest next quarter
3. Incrementality for validation — Calibrate and confirm

When methods agree: High confidence, act decisively.

When methods disagree: Investigate—you've found something important.

The goal: A unified measurement framework where each method compensates for the others' weaknesses, continuously calibrated through experimentation.

Further Reading

Foundational Concepts:
- What is Multi-Touch Attribution? — The tactical layer
- MTA vs MMM: When to Use Each — Detailed comparison

Practical Implementation:
- iOS Tracking & Attribution — Why triangulation is necessary
- Why Platform Reports Don't Match — The problem triangulation solves

Holly Henderson

Co-Founder, mbuzz

Holly Henderson is Co-Founder of mbuzz. With 10+ years in marketing including roles at Westpac, Avon, and Forebrite, she's obsessed with making measurement actually useful.

Harvard Extension School Forebrite Westpac Avon