From the IDMF page.:
"The Intelligent Data Management Framework for Microsoft Dynamics® AX helps administrators optimize Dynamics AX database layout by providing functionality to manage key database layout techniques, by way of intuitive Archiving and Purging capabilities.
The framework provides the platform for reduction in database size by purging and archiving of transactions records from sets of relating entities, while maintaining the consistency and integrity of production data. The Intelligent Data Management Framework provides customers and partners the ability to identify and discover related entities based on the Microsoft Dynamics AX metadata and to determine the purging or archiving criteria for tables.
The Intelligent Data Management Framework also analyzes the Production database to determine usage patterns and assesses the health of the Microsoft Dynamics AX Application. This Framework is compatible with all supported versions of Dynamics AX. The Intelligent Datat Management Framework for Microsoft Dynamics AX is a benefit of staying enrolled in a Business Ready Enhancement plan."
The following is a direct link to a presentation put on by Tao Wang Principal Development Manager Dynamics AX performance, at the AXUG Summit this year: TEC01 - The New Intelligence Data Management (IDM) Tool