> For the complete documentation index, see [llms.txt](https://user.netmera.com/netmera-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://user.netmera.com/netmera-user-guide/customer-data/about-customer-data.md).
# About customer data
Netmera provides **Customer Data** as a module for capturing, unifying, and using information about users.
Customer Data acts as a **data layer** that connects identity, behavior, and consent. This data is used by campaigns, journeys, and automation within Netmera.
### Explore customer data
### Profile attributes
Profile Attributes are structured fields that describe each user. You can store anything from basic contact info to custom traits like membership level, favorite category, or device type.
* Create custom attributes tailored to your business
* Auto-update via SDKs, APIs, or contact uploads
* Use in segmentation, personalization, and journey triggers
### Device metadata
Netmera captures device metadata to support engagement. With this data, you can:
* **Deliver tailored content** by adapting messages to device, OS, and location.
* **Segment with precision** using attributes like app version, region, or language.
* **Gain deeper insights** with analytics by platform, version, and manufacturer.
* **Troubleshoot faster** by identifying issues across specific devices or OS versions.
### Events
Events capture user actions like button clicks, logins, purchases, or onboarding steps. These signals are used for behavioral targeting and automation logic across Netmera.
* Built-in and custom event tracking
* Parameter support for richer data
* Visualize user actions in Event Insight
### Tagless data capture
Tagless Data Capture gathers behavioral data from your website or app automatically, reducing the need for manual tagging and code.
### Why customer data powers the whole platform
Customer Data is a shared source of information for Netmera's engagement features.
Every attribute, event, and permission feeds directly into Netmera’s:
* Campaign targeting
* Audience segmentation
* Journey triggers
* Personalization logic
* Message eligibility filters
* and advanced analytics
Customer Data provides the starting point for engagement as well as a source for reporting and analysis.
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