Joshua Duhl at We Speak Digital Media – The Importance of Usability in Digital Asset Management:

"By contrast the other DAM systems used an approach that took into account the user’s role, permissions or privileges to inform the UI what to display and what to hide. The user interface was tailored to the role, set of tasks or in some cases the user’s level of sophistication. As a result users only saw what they could do. Under the covers, such an approach is a complicated implementation; one that takes a lot of refinement over time to get right, but one which enables greater simplicity and ease of use."