Agility CMS is a **headless content management system** that separates content management from presentation.

# Introduction to Agility CMS

Agility CMS is a **headless content management system** that separates content management from presentation. This means:

- **Content is reusable**: Create content once, use it anywhere
- **Flexible presentation**: The same content can appear on websites, mobile apps, or other platforms
- **Modular approach**: Pages are built using reusable components

## Understanding Headless Architecture

Agility CMS follows a headless architecture pattern, where content management is completely separate from content delivery:

![Agility Headless Architecture Diagram](https://cdn.aglty.io/agility-cms-docs/images/training-guide/assets/concepts/Agility%20Headless%20Architecture.png)

*In a headless architecture, content is created in the Content Manager, exposed through Content APIs, and consumed by various frontend applications (websites, mobile apps) which then deliver the experience to end-user devices. Assets are delivered directly via a CDN for optimal performance.*

**Key Benefits:**
- **Multi-channel publishing**: Same content for web, mobile, and other platforms
- **Technology freedom**: Use any frontend framework or technology
- **Performance**: CDN delivery and optimized asset management
- **Scalability**: Scale content management and frontend independently

## Understanding the Data Model

Agility CMS organizes content using a structured data model that separates content from presentation:

![Agility Data Model Diagram](https://cdn.aglty.io/agility-cms-docs/images/training-guide/assets/concepts/Agility%20Data%20Model.png)

*The Agility data model shows how a Sitemap organizes Pages, Pages contain Components, and Components display Content Items. Each entity (Page, Component, Content) has a corresponding Model that defines its structure. This separation allows content to be reused across multiple pages and components.*

**Key Relationships:**
- **Sitemap** → Maps URLs to Pages
- **Pages** → Contain multiple Components
- **Components** → Display Content Items
- **Content Items** → Standalone, reusable pieces of content

## Understanding the Interface

The Agility CMS interface is organized into four main sections:

![Agility Sections Diagram](https://cdn.aglty.io/agility-cms-docs/images/training-guide/assets/concepts/Agility%20Sections.png)

*The Agility CMS interface is organized into four main sections:*
- **Content**: Manage Lists and Items (reusable content)
- **Assets**: Manage Files, Images, and PDFs (media library)
- **Pages**: Manage Sitemap, Pages, and Components (page structure)
- **Web Studio**: Preview content before publishing

## Key Concepts

**Pages** → Individual web pages organized in a sitemap
**Components** → Reusable building blocks that display content on pages
**Content Items** → Standalone pieces of content that can be linked to components
**Media** → Images, documents, and other digital assets

## What You'll Learn

This generic training guide will teach you:

1. **How to navigate** the Agility CMS interface
2. **How to create and manage** content items
3. **How to build pages** using components
4. **How to work with** the media library
5. **How to publish** and preview content
6. **How to troubleshoot** common issues

Each section focuses on **how Agility CMS works** in general, not how a specific instance is configured. This knowledge will apply to any Agility CMS instance you work with.

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**Next**: [Core Concepts](/docs/training-guide/content-editor-core-concepts) - Deep dive into the Agility Data Model, Headless Architecture, and Sections


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