FIX Common Usage

Imported from previous forum

Does anyone work in a stock exchange? a brokerage firm? or work for a company that sells systems to a stock exchange in any country?. Well, I do. I need your help in gathering some information related to FIX protocol.

  1. What about the FIX common usage? Only for electronic trading? Financial information dissemination? clearing & settlement? STP?
  2. Is it used in order to communicate to common ISVs or news vendors (Reuters, Bloomberg)?
  3. Does anybody know what is the common implementation they use?

Overall, does anybody have more detailed information about the FIX usage in stock exchanges systems? What sock exchanges use it?

Best Regards