PROS is headquartered in Houston, Texas with offices in Skokie, Illinois, London, UK, Toulouse, Nice (Sophia Antipolis) and Paris, France, Frankfurt, Germany, Sydney, Australia[2] , and Sofia, Bulgaria.

[3] In December 2013, PROS acquired SignalDemand, which offers supply aware price and optimization software, for $13.5 million.

[4] In October 2014, PROS acquired Cameleon Software, a provider of Configure, Price, Quote (CPQ) tools, for $33 million.

[5][6] In 2017, PROS acquired Vayant Travel Technologies, a privately held airfare search company based in Sofia, Bulgaria, for $35 million.

[7][8] In 2019, PROS acquired French travel tech firm Travelaer SAS for $12 million.