Jim Dickie, CSO Insights, have written about the case study of StorageTek, and how it moved from $700 million in revenue to $2.2 billion in four years. This is a very good example of business intelligence applied to CRM.

[…]I often share what is still one of the most compelling cases studies we have ever collected, regarding how John Williams took StorageTek from $700 million in revenue to $2.2 billion in four years without adding any new salespeople—all via performance improvement.[…] Source CRMGuru

Collecting data is not easy, but it was the success key for this company. And its also the only way to make further steps in CRM optimizations, data mining and business intelligence.