The content staging solution for Drupal 8 is based on a re-designed version of the Deploy module. This solution consists of some contrib modules and depends on three Drupal core modules. The core dependencies are Entity API, Serialization and Restful Web Services. The contributed module dependencies are Relaxed Web Services, Multiversion, Key-value Extensions and (soon) Deploy. The Relaxed Web Services module provides a Restful/Relaxed JSON API and endpoints for entities, file attachments, administrative tasks like revisions comparison, starting/stopping replication, etc.