Interface Scalability: how does your cms interface hold up as the amount of content grows & grows. web interfaces do not hold up as well.
4 Most Common Interface Scalability problems:
1. Conducting operations in bulk (deleting content, moving content, adding images etc.)
2. Only show what's mine
Permission and security access should be effective in providing guidelines as to what a user can see and do based on his role within the organization. Likewise, permission and security-based access should be equally effective at preventing a user from seeing those things which they can’t do or don’t have access to.
3. Sorting through large volumes of content (next page, next page) - browsing
4. Finding content amidst large volumes of content - searching