Drupal 8 Module Development

Content versus configuration entity types

Let us start by establishing some basic terminology in order to prevent confusion down the line:

• Entities are instances of a given entity type. Thus, we can have one or more entities of a certain type, the latter being like a blueprint for the individual entities.
• Entity types can be of two kinds--content and configuration.

We talked a little bit about configuration entities in the previous section. There, we saw they are multiple instances of a certain type of configuration, as opposed to simple configuration, which is only one set of configuration values. Essentially, configuration entities are exportable sets of configuration values that inherit much of the same handling API as content entities. ...