In the case of portals it is not the functionalities but the content that is the most important. For sure you know what and when to publish thanks to detailed traffic and user behavior statistics. But are you sure that the content is published according to the plan and the key information appears punctually on the portal pages?
Advanced content monitoring will spot any content inconsistency with the agreed publication scheme and will immediately inform you about the problem. No new article in a given section, late stock quotes, a newsletter that was not sent - all that causes alerts are sent and the event is recorded in the base.
The content published in social networking service, such as posts on your Facebook company profile or on Twitter, can also be monitored.
Read a short story on how portal monitoring can be implemented.