What is Drupal? — Enterprise CMS Explained for Beginners

In this tutorial, you'll learn what Drupal is, how its modular architecture compares to WordPress and Joomla, and why governments, universities, and global enterprises rely on Drupal to power their complex, multilingual, content-rich websites.

What You'll Learn

• The history of Drupal and its evolution from a college project to a leading enterprise CMS
• Core differences between Drupal as a CMS vs Content Management Framework (CMF)
• Comparison of Drupal, WordPress, and Joomla across key enterprise criteria
• The Drupal ecosystem: modules, themes, distributions, and community
• What kinds of websites you can build with Drupal
• Overview of Drupal versions 7 through 11 and their lifecycle

Why It Matters

Choosing the right CMS is one of the most consequential technical decisions an organization makes. Drupal's unique architecture -- built around entities, the hook system, and the concept of a Content Management Framework rather than a rigid CMS -- gives developers and site builders the flexibility to model any content structure imaginable. Understanding what Drupal is and when to use it prevents costly re-platforming decisions down the road.

Real-World Use

The Government of Australia uses Drupal to power their primary web presence at australia.gov.au, serving millions of citizens across hundreds of agencies. The White House, Grammys, Tesla, and University of Oxford all run on Drupal. These organizations chose Drupal because it provides enterprise-grade security, multilingual support out of the box, and the ability to model complex content relationships that simpler CMS platforms cannot handle.

Learning Path

flowchart LR
  A[Start: What is Drupal] --> B[Local Installation]
  B --> C[Admin Dashboard]
  C --> D[Hosting]
  D --> E[Content Types]
  E --> F[Fields]
  F --> G[Taxonomy]
  G --> H[Entity System]
  H --> I[Views]
  I --> J[Media]
  J --> K[Revisions]
  K --> L[Blocks]
  L --> M[Menus]
  M --> N[Layout Builder]
  N --> O[Next: Custom Modules]

What is Drupal?

Drupal is an open-source content management system written in PHP. It was first released in 2001 by Dries Buytaert, a Belgian computer scientist who initially built it as a simple message board. Over two decades, Drupal evolved from a small community project into one of the most powerful CMS platforms on the web, powering over a million websites worldwide.

Unlike traditional CMS platforms that treat content as pages or posts, Drupal treats everything as an entity. Nodes, users, taxonomy terms, media, and even configuration are entities. This entity system, combined with the hook-based module architecture, makes Drupal what many call a Content Management Framework rather than just a CMS.

History of Drupal

Drupal began in 2001 as a web board called "drop.org." Dries Buytaert wanted a simple way to share internet news with friends. After releasing the code as open source, a community formed around it. By 2003, Drupal 4.0 was released with a module system. Drupal 5 brought a theme system. Drupal 6 introduced the Fields system. Drupal 7 (2011) was a massive leap with over 600,000 sites running it at its peak.

Drupal 8 (2015) rewrote the platform on top of Symfony components and introduced object-oriented PHP, the Twig templating engine, configuration management, and the Views module in core. Drupal 9 (2020) streamlined the upgrade path. Drupal 10 (2022) removed deprecated code and added CKEditor 5, Claro admin theme, and Olivero front-end theme. Drupal 11 (2024) continues the cycle with modern PHP requirements and new features.

Drupal Community and Drupal.org

The Drupal project is maintained by tens of thousands of contributors on Drupal.org. The community organizes events including DrupalCons, DrupalCamps, and local meetups worldwide. The Drupal Association supports the project through funding and infrastructure. The security team provides responsible disclosure for security advisories. The community also maintains thousands of contributed modules and themes on Drupal.org.

CMS vs CMF

Drupal is unique in that it operates as both a CMS and a Content Management Framework (CMF).

Drupal's CMF nature means you can build any content architecture. A real estate site can have Property listings with Price, Location, and Agent entity references. An e-commerce site can use Drupal Commerce for Products, Variations, and Orders. A university can model Courses, Programs, Faculty, and Departments as custom entities.

Drupal vs WordPress vs Joomla

Here is a comparison of the three major open-source CMS platforms:

Drupal Ecosystem

Modules

Modules extend Drupal functionality. Core modules ship with Drupal and provide essential features like Node, User, Views, Layout Builder, and Media. Contributed modules are created by the community and distributed on Drupal.org. Popular contributed modules include:

• Pathauto (automatic URL aliases)
• Token (placeholder replacement)
• Admin Toolbar (improved admin navigation)
• Webform (forms and surveys)
• Paragraphs (flexible content components)
• Metatag (SEO metadata)
• XML Sitemap (search engine sitemaps)

Themes

Themes control the visual presentation of Drupal sites. Core includes Claro (admin theme) and Olivero (front-end theme). Contributed themes can be found on Drupal.org. Themes use Twig templates for rendering.

Distributions

Distributions are pre-assembled Drupal packages for specific use cases. Examples include:

• Drupal CMS (legacy: Drupal Distributions)
• Open Social (community platform)
• Varbase (enterprise websites)
• Thunder (publishing)
• Drupal Commerce (e-commerce)

What You Can Build with Drupal

Drupal is used for a wide range of website types:

• Enterprise portals: Intranets, extranets, corporate websites with complex content hierarchies
• Government sites: Federal, state, and local government websites with high security and accessibility requirements
• University websites: Higher education with course catalogs, faculty directories, and department sites
• E-commerce: Online stores using Drupal Commerce module for products, carts, and checkout
• Publishing: News sites, magazines, and content-heavy sites with complex editorial workflows
• Communities: Social networks, forums, and member sites using Organic Groups
• Multilingual sites: Sites serving content in multiple languages using core multilingual features
• Headless/Decoupled: Drupal as a backend API with front-end frameworks like Next.js or React

Drupal Versions and Lifecycle

Always use a supported version in production. As of now, Drupal 10 and 11 are the actively maintained versions.

Drupal Architecture Overview

Drupal's architecture has several layers:

+--------------------------------------------------+
| Presentation Layer (Twig templates, themes)       |
+--------------------------------------------------+
| Routing & Controllers (Symfony framework)         |
+--------------------------------------------------+
| Entity System (Nodes, Users, Taxonomy, Files)     |
+--------------------------------------------------+
| Field API (Field types, widgets, formatters)      |
+--------------------------------------------------+
| Plugin System (Blocks, Field types, Actions)      |
+--------------------------------------------------+
| Hook System (module_invoke_all, alter hooks)      |
+--------------------------------------------------+
| Database Layer (MySQL/PostgreSQL/SQLite)          |
+--------------------------------------------------+

Common Mistakes

1. Treating Drupal like WordPress: Expecting Drupal to work out of the box with no configuration. Drupal requires intentional design of content architecture before building.
2. Installing too many modules: Every contributed module adds maintenance overhead, security risk, and potential performance impact. Install only what you need.
3. Ignoring the hook system: Trying to modify core behavior without understanding hooks leads to fragile custom code that breaks on updates.
4. Choosing Drupal for simple sites: Using Drupal for a five-page brochure site overcomplicates maintenance and developer onboarding.
5. Neglecting the community: Not searching Drupal.org for existing modules before building custom functionality leads to reinventing solutions the community has already built.

Practice Questions

1. What distinguishes Drupal as a Content Management Framework from a traditional CMS like WordPress?
2. List three real-world examples of organizations that use Drupal and explain why Drupal was a good fit for their needs.
3. What are the key factors to consider when deciding between Drupal, WordPress, and Joomla for a new project?
4. Challenge: Create a decision flowchart for selecting between Drupal, WordPress, and a custom framework for a project. Consider factors like content complexity, editorial workflow requirements, multilingual needs, developer expertise, timeline, and budget.

FAQ

{{< faq "What programming language is Drupal written in?" "Drupal is written in {{< ilink "PHP" >}}. It uses the Symfony framework for routing and HTTP handling, {{< ilink "Twig" >}} for templating, and YAML for configuration. {{< ilink "MySQL" >}} or MariaDB is the primary database, with PostgreSQL and SQLite also supported." >}}

Mini Project

Goal: Analyze a Drupal-based website to understand its architecture.

1. Visit any Drupal-based website (e.g., whitehouse.gov, grammy.com, or a local government site)
2. Use a browser extension or view page source to look for /core/misc/drupal.js or /sites/default/files/
3. Identify the content types visible on the homepage (articles, press releases, events)
4. Note the navigation structure and how content is organized
5. Create a map of the content architecture with at least three content types and their relationships
6. Write a paragraph explaining why Drupal was used based on what you observed

What's Next

Now that you understand what Drupal is and when to use it, proceed to installing Drupal locally to set up your development environment. After that, explore the admin dashboard to become familiar with Drupal's management interface.