← The Legendary Magazine
Measurement

MMM vs MTA vs Incrementality: The 2026 Measurement Decision Matrix

Legendary Editorial·9 min read

Three lenses on the same funnel — how we pick which one settles the argument.

This article is part of the launch slate for The Legendary Magazine — our editorial arm for teardowns, frameworks, and first-party benchmarks in performance marketing. Full long-form is being commissioned; join The Legendary Brief to be notified when it publishes.

Key takeaways
  • · Platform ROAS is reported, not causal.
  • · MMM, MTA, and incrementality are complementary lenses.
  • · Creative velocity is the last remaining performance lever.

Read the underlying methodology in The Legendary Performance Engine™, or subscribe to the newsletter for the next issue.

The Legendary Brief

Get the next issue Thursday.