By understanding expected user experience, the designer then enters the phase of determining the ends/preferences/teritory/target of system. It is a trade-off process among requirement satisfaction, users' abilities and cost.
What I regard as the primary/basic conditions about information system are the followings:
Multi-vender environment
Organization website for information/knowledge-sharing
One-stop-shop style
User's portal
Seamless file flow in the form of email-attachment or over the web
We may use (1) usability (about operation), (2) functionality, (3) contents and suchlike as the "user experience"-concerned characteristics of the information communication system (particularly the web-based one).