Much like previous versions of Drupal, version 8 of the CMS revolves around the concept of Entities. These are objects that have an ID, Language, Type, and Storage. Some optional properties are URLs, Bundles, and labels. They can be viewed, loaded, created, saved, and deleted, as well as have access permissions set for them. Most things in Drupal are entities, such as Users, Nodes, or Blocks. Many of the core services provide functionality for interacting with entities, and a great deal of caching functionality serves to make entities perform better.