Trading venues are dependent on 100% up-time and high performance computing. Milliseconds of downtime can cost its customers millions and cause reputational damage.
This is why the London Stock Exchange is currently moving its Tradelect core trading system Tradelect, which was built using Microsoft .Net, to MillenniumIT's core trading platform which is Linux based.
Linux is often seen as lacking support and large enterprises often overlook it.
But MillenniumIT started building its applications in Linux in 2006, when according to CEO Tony Weeresinghe, the developer wanted to bring the cost of its platform down.
So basically the London Stock Exchange, which is 100% dependent on the performance of its trading systems, trusts Linux.
Mind you it did buy the supplier in the process of deciding on moving to the new platform.
Weeresinghe says there are now two strong vendors in the market in the form of Suse Linux and Red Hat that enterprises can buy from. "They both offer good support."