I would like to know how the Audience Manager can be used for DMP. Need to understand that a little more.
@JMD5 here is a good starting point: https://www.adobe.com/uk/analytics/audience-manager/data-management-platform.html & https://www.adobe.com/uk/analytics/audience-manager/features.html
You'll also catch a few customer stories.
.. or https://helpx.adobe.com/audience-manager/tutorials.html to get a better feel through some of the available videos