Outstanding detail and depth.
You wrote:
In conclusion, business intelligence plays its role as knowledge management tool to give benefit to the financial sector which always has fast-changing market and vast-amount of data. The business intelligence plays role to extracting the hidden patterns and valuable information from internal and external source of data.
What business uses BI the best from your perspective? Which companies could use it more? Amazon and Google are companies that I believe use BI most often and effectively. I believe hospitals could use BI better to prevent illness and find cures faster.