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

# Core Introduction

> Learn about the core features and architecture of Unleash Commerce

## Welcome to Unleash Commerce Core

The Core package provides the foundational features of Unleash Commerce, including product catalogs, order workflows, customer handling, and extensibility points.

<Tip>
  Visit the [GitHub repository](https://github.com/esign/unleash-commerce-core) to view the source code, submit issues, and contribute.
</Tip>

### Key Concepts

* **Models**: The database models that represent your business entities
* **Contracts**: Interfaces that define extension points for customization
* **Actions**: Reusable business logic for common operations
* **Testing**: Comprehensive testing utilities and patterns

Explore the sections below to get started building with Unleash Commerce Core.