Why use business intelligence tools?
To present and better organize vast number of data from data repositories like data warehouse in friendly, custom front end form with graphic and grid functionalities. So if you have advanced reporting and analytic requirements over huge data piles, using BI tools is a good choice;
To ease communication within company by enabling data access;
To bring additional valuable information to company, meaning to better support company Decision Supporting Systems;
To improve business performance. Goal is to increase sells and to reduce costs;
To gain additional ROI by using internal competitive knowledge.