QlikView in Tsentrobuv covered all the systems and almost all business users - from stores to stakeholders. sales, marketing, accounting, IT and so on. They were covered by about 70+ different QlikView applications.
It's great when you don't know the exact result you want at the end of the project because you receive the result fast and they are often updated so you can correct the way you implement the system. I'm really sure that BI and QlikView can be useful for any kind of company to increase its effectiveness.