In reply to Lisa Linn Allen.

It works over http/ https and does not use XML-RPC. WPSiteSync is designed to Sync isolated content data when you do not wish to perform a full site migration. Premium version allows Bidirectional content Sync. This saves a lot of time and energy downloading and reuploading the entire database. For example, if you add a new paragraph or image to an existing blog post on the staging/ local environment, instead of having to copy and paste that content to the live site, you can press the "Push" button and it will automatically update this piece of content to your live site.