Create a document exploring Enterprise Sync

[data-sync-user]

We need to explore what an enterprise offering of sync would look like. Filing this issue to track writing this document:

https://docs.google.com/document/d/17jr2hAC9fUfLFAtGzfkr2fNxCkIc29MxbTzcdzrLEnY/edit

┆Issue is synchronized with this Jira Task