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. It extends the core REST API with better support for handling UUID references, revisions, file attachments, etc. This module is borrowing the API interface from CouchDB and its Replication API. CouchDB is a NoSQL, document-oriented database. The Multiversion module provides revision support for all content entities. It also tracks update sequences to make dependency management easier and tracks revision trees (similar to Git) in order to support conflict detection. With Multiversion, entities are never deleted, they are just flagged as deleted. This is needed in order to replicate deletions and for conflict handling. Key-value Extensions provides an extension of the core key-value API with a backend for lists and sorted sets that you can do range queries on. This module is needed because of the way the Multiversion module stores its sequence indexes. Deploy (will be implemented soon) - provides a simple user interface to manage replication and conflicts.