A multilingual site has more than 1 language that users interact with, either through the content, the user interface, or both.

Search engine optimization (SEO) is the process of optimizing your online content, so that your content will rank higher in organic (non-paid) search engine results.

Learn to use data from your Drupal site to create customized lists in various forms, such as bulleted lists, grids, calendars, or sliders.

Debugging is the practice of troubleshooting an application through the use of tools and processes in order to find and fix bugs, or better understand the underlying code.

Drupal manages information and access for all visitors to your site, called users, through a system of roles and permissions.

Search provides internal site keyword search for content and users.

Taxonomy in Drupal provides a way to classify your site’s content. Taxonomy vocabularies are created with terms within those vocabularies.