IBM Digital Experience V9.0 offerings provide integration with IBM Cognitive Engagement solutions
and enable hybrid cloud capability to deliver engaging multichannel experiences.
You can purchase an extra license (WebSphere Portal Version 9.0) to integrate WebSphere Portal with Watson Content Hub. The license gives you access to the Asset Picker portlet. Use the portlet to select assets (files, videos, and images) that are stored in the content hub and publish them on your site.
See the announcement letter here