Attribution models (last-click, multi-touch) in Digital Marketing - Full Explanation

Introduction

Imagine you run an online store and want to know which ads or actions helped customers decide to buy. The challenge is figuring out how much credit each step in the customer's journey deserves for the final purchase.

Explanation

Last-Click Attribution

This model gives all the credit for a sale to the last interaction a customer had before buying. It ignores earlier steps and focuses only on the final touchpoint that led directly to the purchase.

Last-click attribution credits only the final action before a sale.

Multi-Touch Attribution

This model spreads credit across multiple interactions a customer had before buying. It recognizes that several ads or actions may have influenced the decision, not just the last one.

Multi-touch attribution shares credit among all key customer interactions.

Real World Analogy

Think of planning a group project where several friends help at different stages. Last-click attribution is like giving all the praise to the friend who handed in the final report, while multi-touch attribution thanks everyone who contributed along the way.

Last-Click Attribution → Friend who submits the final report and gets all the praise

Multi-Touch Attribution → All friends who helped at different stages getting recognized

Diagram

Diagram

Customer Journey:
┌─────────┐   ┌─────────┐   ┌─────────┐   ┌─────────┐
│ Ad 1    │ → │ Ad 2    │ → │ Ad 3    │ → │ Purchase│
└─────────┘   └─────────┘   └─────────┘   └─────────┘

Last-Click: Credit → Purchase
Multi-Touch: Credit → Ad 1 + Ad 2 + Ad 3 + Purchase

This diagram shows a customer journey with three ads leading to a purchase and how credit is assigned differently by last-click and multi-touch attribution.

Key Facts

Last-Click Attribution → Assigns 100% credit to the final interaction before conversion.

Multi-Touch Attribution → Distributes credit across multiple interactions in the customer journey.

Customer Journey → The sequence of interactions a customer has with a brand before buying.

Conversion → When a customer completes a desired action, like making a purchase.

Common Confusions

Believing last-click attribution shows the full impact of all marketing efforts.

Believing last-click attribution shows the full impact of all marketing efforts. Last-click ignores earlier interactions, so it misses how previous ads influenced the customer.

Thinking multi-touch attribution always gives equal credit to every interaction.

Thinking multi-touch attribution always gives equal credit to every interaction. Multi-touch models can weigh interactions differently; not all touches are treated equally.

Summary

Last-click attribution credits only the final step before a purchase, ignoring earlier influences.

Multi-touch attribution recognizes multiple interactions and shares credit among them.

Choosing the right model helps understand how marketing efforts contribute to sales.