The best feature is the ability to create functional dashboards, where the IT manager can interact with its data trough the dashboard using the drill down feature. Another relevant aspect, is the integrations that are very simple to do due to the open architecture of the system.
We provide a service to a large truck manufacturer, and they wanted to implement a customer service team that had an automated escalation process. Since they had a lot of different products, and each product had its own business rules to escalate, that was possible because of the Business Process feature that Cherwell has. It allows you to define, based on several criteria, such as incident classification, specific item in the service catalog, and the end-user, which way the escalation process goes.