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Comparing First-Party and Unknown Customer Performance Insights in AMC

  • Amazon Marketing Cloud (AMC)
Comparing First-Party and Unknown Customer Performance Insights in AMC
October 10, 2024

As the advertising landscape evolves, the demand for deeper, more accurate customer insights has surged. Amazon Marketing Cloud (AMC) offers advertisers a sophisticated solution to analyze consumer behavior and ad performance at a granular level. Within AMC, advertisers can access two powerful types of insights: first-party data (customer insights you already know) and unknown customer performance insights (data from anonymous or non-identified customers). Understanding how to leverage both can significantly enhance your advertising strategy.

In this article, we will compare these two types of insights in the context of AMC, exploring how each can be used to refine your campaigns, optimize targeting, and improve your overall return on ad spend (ROAS).

What is Amazon Marketing Cloud?

Before diving into the comparison, let’s briefly cover what AMC is and how it works. Amazon Marketing Cloud is a data clean room that allows advertisers to analyze vast amounts of advertising and customer interaction data. This powerful tool provides access to raw, event-level data (such as impressions, clicks, and purchases) from Amazon's various advertising channels, such as Amazon DSP, Sponsored Products, Sponsored Brands, and more.

AMC allows advertisers to create custom audience segments, measure the performance of their campaigns, and gain actionable insights. The main benefit of AMC is that it operates in a privacy-compliant manner by anonymizing customer data, ensuring user privacy while delivering meaningful insights.

First-Party Data in Amazon Marketing Cloud

First-party data refers to the information that you collect directly from customers. This can include data from previous purchases, website behavior, CRM (Customer Relationship Management) data, and interactions within your own brand’s ecosystem. In AMC, first-party data can be particularly valuable because it allows you to understand how your known customers interact with your ads, and how they move through your sales funnel.

Benefits of First-Party Data

  1. Personalized Targeting: Since first-party data relates to customers you already know, you can tailor your campaigns with a high degree of specificity. For example, you can segment loyal customers and deliver targeted messaging based on their past behavior.

  2. Higher Data Accuracy: First-party data is typically more accurate since it is collected directly from your interactions with customers. This allows for more precise targeting, making your campaigns more efficient.

  3. Lifetime Value Insights: By leveraging first-party data, you can analyze long-term customer behavior and calculate customer lifetime value (CLV). This is essential for understanding which segments are worth investing in and for optimizing your budget accordingly.

  4. Enhanced Retargeting: First-party data helps you re-engage existing customers through retargeting campaigns. Since you know their preferences, you can serve them relevant ads to encourage repeat purchases or upsells.

    Learn more about How to Upload First-Party Data to Amazon Marketing Cloud (AMC).

Drawbacks of First-Party Data

While first-party data is highly valuable, it has its limitations:

  • Limited Reach: First-party data only covers customers you already know. While this data is valuable for retention and upselling, it might not help you reach new audiences.

  • Bias Toward Existing Customers: Over-reliance on first-party data can cause you to miss opportunities for growth among potential new customers.

Unknown Customer Performance Insights in Amazon Marketing Cloud

In contrast to first-party data, unknown customer performance insights refer to the information derived from users who interact with your ads but haven’t explicitly identified themselves through actions like signing in, purchasing, or subscribing. AMC anonymizes this data, making it possible to analyze customer behavior in a privacy-compliant way while still providing actionable insights.

Benefits of Unknown Customer Performance Insights

  1. Discover New Audiences: With unknown customer performance insights, you can analyze users who may have engaged with your ads but haven’t yet converted or become known to your brand. This helps you identify emerging audience segments and potential new customers.

  2. Broader Reach: Since this data includes a broader spectrum of users, it allows you to gauge your campaign's performance across a wider audience. This can be particularly helpful when trying to grow brand awareness or expand into new markets.

  3. Unbiased Insights: Unlike first-party data, which is often biased toward your existing customer base, unknown customer insights provide a more neutral view of how your ads perform across a wider array of customers. This can help you identify whether your ads resonate with a new demographic or geographic region.

  4. Top-of-Funnel Understanding: Unknown customer insights allow you to better understand the behavior of users in the awareness and consideration phases. By analyzing how these users engage with your ads, you can optimize your top-of-funnel strategies to attract new prospects.

Drawbacks of Unknown Customer Insights

While unknown customer insights are valuable, there are challenges:

  • Lack of Personalization: Since you don’t know who these customers are, it’s more difficult to personalize your messaging. You’ll need to rely on broader audience segments and general targeting strategies.

  • Lower Conversion Attribution Accuracy: With unknown customers, it’s harder to directly attribute conversions. While AMC provides aggregated data, you can’t tie specific behaviors back to known customers, which may limit your ability to assess campaign effectiveness at an individual level.

Key Differences Between First-Party and Unknown Customer Performance Insights

Criteria

First-Party Data

Unknown Customer Insights

Customer Identification

Known customers with identifiable behaviors

Anonymous customers; no personal identifiers

Targeting Precision

Highly personalized and specific

Broad and generalized targeting

Data Accuracy

Very accurate (directly collected from your ecosystem)

Aggregated and anonymized, less precise at an individual level

Audience Reach

Limited to known customers

Broad reach, includes potential new customers

Bias

Skewed toward existing customer behavior

Unbiased, includes a wide range of user interactions

Conversion Attribution

Easier to attribute conversions

Difficult to attribute specific actions to conversions



By comparing first-party and unknown customer performance in AMC you can answer questions like:


  • What is the purchase rate for known customers versus unknown customers, per ad product?

  • What percent of my known customer set have I been able to reach per ad product type?

  • How much am I spending, per ad product, on known vs. unknown customers?


How Can Hector Help You?


Hector’s powerful reporting dashboard simplifies accessing AMC insights, eliminating the need for complex SQL queries. With an intuitive interface, it delivers actionable insights that empower you to make timely, informed decisions.


Unlock the potential of AMC with Hector and drive incremental growth for your brand.


Discover more about reporting capabilities in Amazon Ads Reporting and Flipkart Ads Reporting.


If you’re new to AMC, Hector can help you start by setting up your own AMC instance.


Conclusion

Amazon Marketing Cloud provides advertisers with unparalleled access to both first-party and unknown customer performance insights, each offering distinct advantages. While first-party data allows for personalized, highly accurate targeting, unknown customer insights give you a broader view of your audience, helping you identify new growth opportunities.

By combining both types of data, you can build a comprehensive advertising strategy that drives both retention and growth. Whether you’re focused on nurturing your existing customers or expanding into new markets, AMC equips you with the tools to make data-driven decisions that maximize your advertising impact.

In a privacy-conscious world, AMC stands out as a powerful solution for gleaning actionable insights while ensuring compliance, giving advertisers the confidence to create impactful, customer-centric campaigns.



Frequently Asked Question

AMC is a data clean room that allows advertisers to analyze advertising and customer interaction data, providing raw event-level data from various Amazon advertising channels while ensuring privacy compliance.

Unknown customer performance insights come from anonymized data of users who interact with ads but haven’t been explicitly identified, helping advertisers analyze broader audience behavior.

First-party data refers to information collected directly from customers, such as purchase history, website behavior, and CRM data, helping advertisers understand how known customers interact with their ads.

First-party data allows for personalized targeting, higher data accuracy, insights into customer lifetime value, and enhanced retargeting.

First-party data has limited reach as it only covers known customers, and an over-reliance can result in a bias toward existing customers, missing new audience opportunities.

They help discover new audiences, provide a broader reach, deliver unbiased insights, and offer a better understanding of top-of-funnel behavior.

It’s harder to personalize ads and attribute specific conversions with unknown customers, limiting direct campaign effectiveness analysis.

First-party data is personalized and accurate for known customers, while unknown insights offer broader, unbiased data with less precision but a wider reach.

Hector’s dashboard simplifies accessing AMC data, delivering actionable insights without needing SQL queries, making it easier to optimize campaigns and drive growth.

About the Author

Meher Patel is the Founder & CEO of Hector Ai. He specializes in Amazon Ads, Amazon DSP, Amazon Marketing Cloud (AMC), retail media, and agentic AI.

Under his leadership, Hector is ranked among the Top 20 Amazon Ads partners globally, and has won the Amazon Ads Partner Award for Seasonal Sales Strategy (2025) and the Amazon Ads Innovation Award (2025). Today, Hector manages over $350 million in annual ad spend across 500+ brands and agencies worldwide.

Meher Patel, Founder & CEO of Hector Ai

Meher Patel

Founder & CEO, Hector Ai

Hector Ai
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On this page

  • 1.What is Amazon Marketing Cloud?
  • 2.First-Party Data in Amazon Marketing Cloud
  • 3.Benefits of First-Party Data
  • 4.Drawbacks of First-Party Data
  • 5.Unknown Customer Performance Insights in Amazon Marketing Cloud
  • 6.Benefits of Unknown Customer Performance Insights
  • 7.Drawbacks of Unknown Customer Insights
  • 8.Key Differences Between First-Party and Unknown Customer Performance Insights
  • 9.How Can Hector Help You?
  • 10.Conclusion
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