> ## Documentation Index
> Fetch the complete documentation index at: https://docs.voucherify.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Customer overview

> Understand how customers and segments help you run targeted incentives in Voucherify

Voucherify uses customer data to help you run targeted promotions, loyalty programs, and validation rules.

The **Customers** section lets you manage individual profiles and organize your audience into segments.

## Core building blocks

Customer logic in Voucherify is based on two main elements:

* **Customer profiles**: Individual records with contact details, activity data, and incentives.
* **Customer segments**: Groups of customers based on shared attributes or behavior. Segments can be static (fixed lists) or dynamic (updated automatically based on filters).

## Why this matters

Not every incentive should be available to every customer.

With customer profiles and segments, you can:

* Reward selected groups of customers
* Limit promotions to specific audiences
* Personalize offers based on profile data
* Control who is eligible for a campaign

This helps you create more relevant experiences and improve campaign performance.

## What you can do

The **Customers** section provides the building blocks for audience-based incentives.

You can:

* Create and manage customer profiles
* Store standard data and custom metadata
* Group customers into segments
* Reuse segments across campaigns and rules

## How customers connect to campaigns

Customers work together with other Voucherify features, such as:

* Validation rules
* Discount promotions
* Loyalty programs
* Distributions and referral programs

This flexible structure lets you reuse the same audience logic across many campaigns and workflows.

<Tip>
  Start simple. Create one segment and use it in a validation rule to control who can use a promotion.
</Tip>

## Where to go next

To learn more, explore the detailed guides:

* [Manage customers](/prepare/customers)
* [Customer segments](/prepare/customer-segments)
* [Validation rules](/optimize/validation-rules-reference)
* [Customer API](/api-reference/customers/customer-object)