HOUSTON--(BUSINESS WIRE)--PROS® (NYSE:PRO), a big data software company, today announced an impressive array of high-profile speakers for its annual Outperform 2015 conference, the premier event for pricing, sales and revenue management leaders. The North America conference – which features more than 20 sessions – is scheduled for March 11-13 at the Hilton Americas Houston, the four-diamond luxury convention hotel located in the country’s fourth-largest city. Microsoft is this year’s Outperform