Dependencies are Drupal modules or server-side applications that other modules and applications depend on to function. Dependencies are required before installing related modules. Each section of the documentation describing a module describes its dependencies. If you find that there is an undocumented dependency, please let us know via any community channel so that we can update this documentation.
Dependencies in this section may themselves have additional dependencies that require installation. We cannot provide instructions on how to install every sub-dependency required by dependencies here; links are provided, however, to sub-dependencies' websites for further instruction.
For many dependencies, a list of provisions are given - in this context, a provision will refer to any module or application for which the dependency provides functionality.