Best Practices for Using Drupal

Drupal has long been one of the leading open-source content management systems for building institutional portals, corporate websites, publishing platforms, and complex web applications. Its flexibility and modular architecture enable the development of highly customizable solutions that can evolve alongside an organization’s changing needs.
However, the quality of a Drupal project depends on much more than the features offered by the platform itself. What truly makes the difference is how the project is designed, developed, and maintained over time. Following established best practices results in websites that are more secure, performant, and easier to maintain, while reducing long-term costs and minimizing the risk of future issues.

Build with the Future in Mind

One of the most important aspects of Drupal development is avoiding solutions that can complicate future updates or collaboration between developers. For this reason, it is essential to use tools such as Composer to manage Drupal Core, contributed modules, and all project dependencies.
Likewise, Drupal’s Configuration Management system should be used to export site configuration into YAML files that can be version-controlled with Git. This approach keeps development, staging, and production environments synchronized, makes every configuration change traceable, and greatly simplifies team collaboration and rollback procedures when necessary.
Planning the project’s architecture from the beginning also makes future development much easier, allowing updates and new features to be implemented more quickly and with less risk.

Customize Drupal Without Modifying Core

One of the most common temptations, especially in smaller projects, is to modify Drupal Core files directly to achieve the desired behavior as quickly as possible. While this may seem like a shortcut, it makes future upgrades significantly more difficult, since every new Core release will overwrite those changes.
Fortunately, Drupal provides a highly flexible architecture that allows developers to extend or modify system behavior without touching the original code. Custom modules, services, plugins, Event Subscribers, and Twig templates make it possible to implement tailor-made functionality while keeping the project fully upgradeable.
The same principle applies to contributed modules. Before installing one, it’s always worth evaluating its quality, maintenance status, update frequency, and the actual value it brings to the project. In some cases, a small custom implementation may prove to be a simpler, lighter, and more maintainable solution than introducing an additional dependency.

Maintenance Is an Essential Part of Every Project

A Drupal website should never be considered a finished product. Like any software application, it requires ongoing maintenance to remain secure, reliable, and compatible with evolving technologies.
Regularly updating Drupal Core and contributed modules helps fix security vulnerabilities, resolve bugs, and take advantage of new features introduced by the community. As a best practice, updates should always be tested first in a development or staging environment before being deployed to production.
Routine maintenance should also include removing unused modules, monitoring performance, reducing technical debt, and keeping documentation up to date so that future maintenance and development remain efficient.

Performance and Security Don’t Happen by Accident

Website performance depends not only on the hosting infrastructure but also on the architectural decisions made during development. Drupal provides numerous built-in tools for optimizing performance, including its caching system, Image Styles, CSS and JavaScript aggregation, and advanced cache management through Cache Tags and Cache Contexts.
Optimizing Views and database queries also plays a significant role in improving overall application performance. For high-traffic websites, technologies such as Redis or Varnish can be integrated to further enhance caching efficiency.
Security follows the same philosophy: it is not achieved through a single action but through a combination of good practices. Granting users only the permissions they actually need, limiting the number of administrator accounts, enforcing strong passwords, and enabling multi-factor authentication whenever possible are all essential measures for reducing the attack surface and protecting the application.

A Structured Development Process Makes the Difference

In professional Drupal projects, code quality is just as important as functionality. Following Drupal coding standards and PSR recommendations, using Dependency Injection, separating business logic from presentation, and developing reusable components all contribute to code that is easier to read, test, and maintain over time.
Equally important is automating as much of the deployment process as possible. Continuous Integration (CI) and Continuous Deployment (CD) pipelines help automate code quality checks, enforce coding standards, import configuration, apply database updates, and significantly reduce errors caused by manual deployments.
Even when a complete CI/CD pipeline is not available, maintaining separate development, staging, and production environments has become an essential best practice for any project of significant complexity.

Overall, Drupal provides all the tools needed to build robust, scalable, and secure web applications. However, the quality of a project is ultimately determined by the development practices adopted throughout its lifecycle.
Following best practices means designing with the future in mind, maintaining clean and well-structured code, managing configuration and dependencies correctly, prioritizing security, and establishing a disciplined development workflow. Although these practices require some additional effort at the beginning of a project, they pay significant dividends over time by making the application more stable, easier to evolve, and less expensive to maintain.
Ultimately, best practices are far more than technical recommendations, they are the foundation for transforming Drupal into a platform capable of supporting an organization’s long-term growth while continuously adapting to new requirements without compromising quality, reliability, or performance.

Luca Di Fiore | Senior Graphic, Web Designer and Developer