What is first-party data, and why is it important?

First-, second-, third-, and zero-party data: the differences

In addition to first-party data, there are three other types of customer data, each with a different source and a different level of reliability. Knowing what data you have determines how much weight you should give it in your strategy. This isn’t always obvious: comments on your posts, direct messages (DMs), and follower data from your own social media channels, for example, also fall under first-party data. That’s why we’re explaining it to you.

Second-party data

Second-party data is the first-party data of another organization, which you receive directly from that party through a partnership or agreement. Consider, for example, a travel agency that shares customer data with an airline it partners with. The data was not collected by you, but it is obtained through a direct, transparent agreement.

Third-party data

Third-party data is collected by external parties that have no direct relationship with the customer themselves, often through cookies or data brokers (companies that collect personal information and resell it to multiple buyers at once). This makes the data less accurate and, as will become clear later in this article, increasingly difficult to use.

Zero-party data

Zero-party data is data that a customer consciously and actively shares with you—for example, through a preferences menu, a survey, or account settings. Whereas behavioral data is inferred from a customer’s actions, a customer tells you this directly. That makes zero-party data the most explicit and reliable of the four types.

Which data source should you choose, and when?

For most organizations, first-party data serves as the foundation. Zero-party data is a valuable addition when you want to go beyond inferred behavior and need explicit preferences, for example, for custom personalization. Second-party data is particularly relevant if you want to reach new target audiences through a trusted partner without having to rely on third-party data.

What is considered first-party data?

First-party data comes in many forms and is usually collected at times when a customer is already interacting with you.

• Registrations: For example, when creating an account, you immediately enter basic information such as your name and email address.

• Newsletter subscriptions: Information shared for updates or promotions that immediately gives you a starting point for targeted communication.

• Requests: such as demos, downloads (of white papers, for example), or product information, which reveal where a person's specific interests lie.

• Feedback and Surveys: valuable insights gained through direct questions, such as those about satisfaction or desired features.

• Interaction with customer service: including chatbots, emails, and social media, where customers often explicitly state what they need or what issues they're facing.

• Behavioral data: Data about website and app usage, provided consent has been given, such as pages visited or click behavior.

• CRM data: Information gathered during customer interactions, ranging from previous purchases to notes from sales conversations.

• Loyalty Programs: Data on purchases, retention, and customer preferences, which reveal who your most valuable customers are.

Step-by-Step Guide: How to Collect First-Party Data

Collecting first-party data is not a one-time action, but an ongoing process. Here are the five steps.

1. Collecting data at the right touchpoints

Collect data from the places where customers are already interacting with you: your website, customer service and CRM, your mobile app, offline purchasing behavior, and surveys. Two methods work well together here:

• In permission marketing, you ask customers for information in exchange for something of value, such as a discount, a free webinar, or an informative newsletter, either online or during in-person interactions.

• With advanced tools, you can collect customer data in a privacy-friendly manner and in large volumes, such as with a consent management platform (CMP) for consent, a customer data platform for managing opt-ins and segmentation features.

2. Store and centralize data to create a single customer view

Data scattered across separate systems results in an incomplete view of your customers. Bring data from your online store, email tool, CRM, and other sources together in one central location so you can Complete customer profile can help you reach your target audiences.

There are a number of best practices that help make the process more efficient collecting and managing first-party data.

3. Enriching Data with Additional Sources

Combined data provides more insight than individual data sources do on their own. By enriching data—for example, by linking behavioral data to CRM data—you gain a more complete picture of each customer.

4. Activating Data in Campaigns

Data that you collect but don't use is of no value. Use your enriched customer data to personalized content, campaigns, segmentation, and targeted communication.

5. Measure and Optimize Results

Track whether your first-party data is contributing to results, and make adjustments as needed. Many organizations use RFM variables (Recency, Frequency, Monetary) for this purpose to segment based on their purchasing behavior.

First-party data with Ternair

Collecting first-party data is rarely the problem. The real bottleneck lies in fragmentation: data scattered across systems that don't communicate with each other. The Customer Data Platform van Ternair brings those separate data sources together into a single, functional system—including consent and opt-in management—so that you not only collect data in compliance with the rules, but can also actually put that data to use.

When data is the focus, Ternair achieves this through marketing automation to create personalized content—from a single email to an entire campaign—without having to manually transfer data between tools.

Ternair also recognizes visitors before they identify themselves. Through website recognition Anonymous visitors are identified based on fingerprinting and IP tracking. If someone later subscribes to your newsletter or requests a demo, Ternair automatically links that action to the existing visitor profile. This way, you don’t have to wait until the first known point of contact to start collecting data.