Decoupled modules and Drupal 11

The JSON:API module in code provides zero configuration out of the box. Use JSON:API Extras to customize your API . JSON:API Extras provides a means to override and provide limited configurations to the default zero-configuration implementation provided by the JSON:API in Core. Use JSON:API Extras to customize an API generated by the Core JSON:API module.

Consumers is a module that does not do much on its own. Instead it's used by other modules to provide functionality for decoupled scenarios. Use this module as a dependency in your custom module to provide per-consumer variations of a feature. Or write a general purpose contrib module like Simple OAuth or Consumer Image Styles .