Headless Drupal architecture: rebuilding the frontend with Next.js
This project involved modernizing a large Drupal website that had gradually become difficult to maintain and slow to evolve.
The website was originally built as a monolithic Drupal application, where the CMS handled both the backend logic and the frontend rendering.
Over time this architecture became limiting for both editors and users.
To solve this, the frontend was rebuilt using Next.js, while Drupal remained the backend responsible for content and business logic.
The full transition was completed in approximately 125 hours.
Project context
The existing website had been running on a traditional monolithic Drupal architecture for years.
While Drupal handled content management effectively, several issues had started to appear:
- frontend performance had degraded over time;
- the interface had become heavy and difficult to extend;
- user experience on modern devices was not optimal;
- implementing new frontend features required deep Drupal changes.
The client wanted to improve performance and flexibility without replacing Drupal entirely.
Scope and goals
The objective was to modernize the frontend architecture while preserving the existing backend infrastructure.
Key goals included:
- separating frontend and backend responsibilities;
- improving frontend performance;
- preserving existing Drupal content and workflows;
- avoiding a risky full platform migration.
The chosen solution was to move the frontend to Next.js and use Drupal as a backend API.
Tech stack
- Drupal CMS (backend)
- Next.js frontend
- REST API communication
- headless Drupal architecture
- server-side rendering
Key challenges
The transition required careful architectural planning.
Important challenges included:
- preserving the existing Drupal data structure;
- exposing content through a stable API layer;
- ensuring frontend performance improvements;
- maintaining editorial workflows inside Drupal.
The goal was to modernize the frontend without disrupting the backend ecosystem.
Headless architecture
The final architecture separated responsibilities between two layers.
Drupal became the backend system, responsible for:
- content management
- structured data
- business logic
- editorial workflows
- API responses
Next.js became the frontend layer, responsible for:
- rendering pages
- handling routing
- delivering a modern user experience
- optimizing performance.
This approach is commonly referred to as Headless Drupal.
Frontend rebuild with Next.js
The entire frontend interface was rebuilt using Next.js.
This allowed the project to benefit from:
- faster page rendering
- improved performance
- modern frontend architecture
- better control over UI components.
Next.js communicates with Drupal through APIs to fetch the necessary content and render pages dynamically.
API integration
Instead of Drupal generating HTML pages directly, it now provides content through APIs.
Next.js retrieves data such as:
- articles
- pages
- structured content
- navigation data
The frontend then renders the pages using this information.
This architecture makes it easier to evolve the user interface without changing backend logic.
Editorial workflow
One of the key requirements was preserving the editorial workflow.
Editors continued using Drupal exactly as before:
- creating articles
- managing content
- updating pages.
The only difference is that the frontend now consumes this content through APIs.
This ensured that the transition did not disrupt daily publishing operations.
Performance improvements
Moving the frontend to Next.js significantly improved performance.
The new architecture enabled:
- faster page rendering;
- improved loading speed;
- better responsiveness across devices.
Users experienced a noticeably faster website while the backend system remained unchanged.
Result
The final result was a modern Headless Drupal architecture.
The project delivered:
- a fast Next.js frontend;
- Drupal continuing to function as the backend CMS;
- preserved editorial workflows;
- improved scalability and flexibility.
The migration was completed in approximately 125 hours.
What this case demonstrates
Many Drupal websites become slow or difficult to evolve because frontend and backend responsibilities are tightly coupled.
A Headless Drupal architecture separates these concerns and allows each layer to evolve independently.
This approach combines the strong content management capabilities of Drupal with the performance and flexibility of modern frontend frameworks.
If you are considering Headless Drupal
A headless architecture can be a good choice when a project needs:
- faster frontend performance;
- modern user interface development;
- flexible frontend architecture;
- long-term scalability.
By keeping Drupal as the backend CMS while moving the frontend to a modern framework like Next.js, organizations can modernize their platforms without rebuilding everything from scratch.
FAQ
What is Headless Drupal?+
Headless Drupal is an architecture where Drupal is used as a backend CMS that provides content through APIs, while a separate frontend framework such as Next.js handles the user interface.
Why use Next.js with Drupal?+
Next.js provides a modern frontend framework that allows faster rendering, improved performance, and more flexible UI development while Drupal continues to manage content.
Do editors still use Drupal in a headless setup?+
Yes. Editors continue using Drupal to create and manage content. The frontend simply retrieves that content through APIs.
Is headless Drupal faster than traditional Drupal websites?+
In many cases yes. Separating the frontend and backend allows better performance optimization and more efficient rendering strategies.
Is it possible to convert an existing Drupal website to headless architecture?+
Yes. Existing Drupal websites can often be converted into headless architectures without rebuilding the entire backend system.