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.

Practice

1. What does the last-click attribution model do in digital marketing?

easy

A. Distributes credit based on ad cost

B. Gives all credit to the final ad clicked before purchase

C. Ignores the last ad clicked and credits the first one

D. Shares credit equally among all ads seen

Solution

1. Step 1: Understand last-click attribution

   Last-click attribution assigns 100% credit to the last ad clicked before a purchase.

2. Step 2: Compare with other models

   Unlike multi-touch models, it does not share credit among multiple ads.

3. Final Answer:

   Gives all credit to the final ad clicked before purchase -> Option B

4. Quick Check:

   Last-click = final ad credit [OK]

Hint: Last-click means credit goes to the last ad clicked [OK]

Common Mistakes:

• Thinking credit is shared among all ads
• Confusing last-click with first-click attribution
• Assuming cost affects credit distribution

2. Which of the following correctly describes a multi-touch attribution model?

easy

A. It ignores all ads except the most expensive one

B. It gives all credit to the first ad clicked

C. It shares credit among multiple ads that influenced the customer

D. It credits only the ad with the highest click rate

Solution

1. Step 1: Define multi-touch attribution

   Multi-touch attribution divides credit among several ads that helped influence the customer.

2. Step 2: Eliminate incorrect options

   It does not give all credit to just one ad or ignore ads based on cost or click rate.

3. Final Answer:

   It shares credit among multiple ads that influenced the customer -> Option C

4. Quick Check:

   Multi-touch = shared credit [OK]

Hint: Multi-touch means credit is shared among ads [OK]

Common Mistakes:

• Confusing multi-touch with last-click
• Thinking only one ad gets credit
• Assuming credit depends on ad cost

3. Consider a customer who saw three ads: Ad A, Ad B, and Ad C. They clicked Ad A first, then Ad B, and finally Ad C before purchasing. In a last-click attribution model, which ad gets full credit?

medium

A. Ad A

B. All ads share credit equally

C. Ad B

D. Ad C

Solution

1. Step 1: Identify the last ad clicked

   The customer clicked Ad A, then Ad B, and lastly Ad C before purchase.

2. Step 2: Apply last-click attribution rule

   Last-click attribution gives 100% credit to the final ad clicked, which is Ad C.

3. Final Answer:

   Ad C -> Option D

4. Quick Check:

   Last-click credit = last ad clicked [OK]

Hint: Last-click means credit goes to the last clicked ad [OK]

Common Mistakes:

• Giving credit to the first or middle ad
• Sharing credit equally in last-click model
• Confusing last-click with multi-touch

4. A marketer uses a multi-touch attribution model but notices all credit is going to only one ad. What is the most likely error?

medium

A. They are actually using a last-click model by mistake

B. They shared credit equally among all ads

C. They ignored the last ad clicked

D. They gave credit based on ad cost

Solution

1. Step 1: Understand expected multi-touch behavior

   Multi-touch should share credit among multiple ads, not just one.

2. Step 2: Identify why all credit goes to one ad

   If all credit goes to one ad, likely the last-click model is used instead of multi-touch.

3. Final Answer:

   They are actually using a last-click model by mistake -> Option A

4. Quick Check:

   Single ad credit = last-click, not multi-touch [OK]

Hint: All credit to one ad? Check if last-click model is used [OK]

Common Mistakes:

• Assuming multi-touch always shares credit equally
• Ignoring model settings
• Confusing ad cost with credit assignment

5. A customer interacted with three ads: Ad X (first click), Ad Y (viewed but not clicked), and Ad Z (last click). Using a multi-touch attribution model that gives 40% credit to first click, 20% to views, and 40% to last click, how is the credit distributed?

hard

A. Ad X: 40%, Ad Y: 20%, Ad Z: 40%

B. Ad X: 33%, Ad Y: 33%, Ad Z: 33%

C. Ad X: 0%, Ad Y: 50%, Ad Z: 50%

D. Ad X: 100%, Ad Y: 0%, Ad Z: 0%

Solution

1. Step 1: Identify credit percentages per interaction type

   First click gets 40%, views get 20%, last click gets 40% credit.

2. Step 2: Assign credit to each ad

   Ad X is first click -> 40%, Ad Y is viewed -> 20%, Ad Z is last click -> 40%.

3. Final Answer:

   Ad X: 40%, Ad Y: 20%, Ad Z: 40% -> Option A

4. Quick Check:

   Credit split matches model percentages [OK]

Hint: Match credit percentages to ad interaction types [OK]

Common Mistakes:

• Ignoring view credit
• Splitting credit equally instead of weighted
• Confusing first and last click percentages