Note: This is issue is part ofand is only meant for planning and governance sign-offs. Work will happen in child issues of this plan.
Target version: Drupal 8.4
Super big phase. Lots of discussion needed here. The basic idea is that we need to support full-site preview on a single site (seefor cross site content staging).
This phase will introduce the UI to create, manage and switch between multiple workspaces. It will also introduce a basic permissions model for viewing and editing content within a workspace based on the existing Entity Access API.
Most current prototypes, see comment #8.