> ## 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.

# Product overview

> Understand how products and collections help you build product-based incentives in Voucherify

Voucherify is an incentive optimization engine that helps you run discounts and loyalty rules on the right items.

The **Products** section lets you organize your catalog and use product data in campaigns, promotions, and validation rules.

## Core building blocks

Products in Voucherify are based on two key elements:

* **Products** – base items in your catalog
* **SKUs** – variants of a product (for example size or color)

To work with groups of items, you can use:

* **Product collections**: sets of products defined manually or by filters.

## Why this matters

Many incentives should not apply to every item in the cart.

With products and collections, you can:

* Reward only selected products
* Limit discounts to specific categories
* Build loyalty rules for chosen items
* Control where incentives apply

This helps you stay precise and protect your margins.

## What you can do with products

The **Products** section gives you building blocks for product-based incentives.

You can:

* Add products and SKUs to your catalog
* Enrich items with custom attributes (metadata)
* Group items into collections
* Use collections in validation rules and campaigns

## How products connect to campaigns

Products do not work alone.

They connect with other Voucherify features, such as:

* Validation rules
* Discount promotions
* Loyalty earning rules
* Product-based bundles (like BOGO)

This makes it easier to reuse the same product logic across many campaigns.

<Tip>
  Start simple: create one collection and use it in a validation rule to limit where a promotion applies.
</Tip>

## Where to go next

To learn more, explore the detailed guides:

* [Manage products](/prepare/products)
* [Product collections](/prepare/product-collections)
* [Validation rules](/optimize/validation-rules-reference)
* [Products API](/api-reference/products/product-object)