It's not particularly easy to estimate ROI as the cost for LMAX Exchange of not going with Zing would have have been partly tying up most of the development team for a long period of time and partly the opportunity cost to the business of missing out on a lot of revenue generating features. I think everyone at LMAX Exchange is convinced that our investment in Zing has been completely justified and that the product has easily paid for itself and then some.

The ROI is excellent.