Digizuite™ DAM for Sitecore (DFS) integrates the Digizuite™ Digital Asset Management software (DAM) with your Sitecore, allowing you to embed assets from Digizuite™ into your Sitecore website.
After the installation of DFS into your Sitecore instllation, you can still use the Sitecore Media Library. However, you should not use this, as DFS is to be considered a full replacement of the Sitecore Media Library