Houston, Texas – May 28, 2008 — PROS, a world leader in pricing and revenue optimization science and software, was recently honored as a leading results-driven marketing organization by the American Marketing Association’s Houston Chapter at the 22nd Annual Crystal Awards.  PROS was named a finalist and winner for both Web-based Newsletter/Periodical and Web Site – Most improved categories. 

“Because the AMA Crystal Awards program rewards results, we are especially proud of this achievement,” said Garth Hoff, Corporate Marketing, PROS.  “To have been honored twice is a real acknowledgment that PROS has achieved incredible results in our marketing programs.”  PROS was one of eleven companies this year to be named the winner in more than one category and one of five multiple award winners outside of advertising and consulting firms and non-profits.

PROS price optimization software provides strategic innovation and risk mitigation in a challenging environment.  “The success of PROS’ sales and marketing organization complements our long-standing global leadership in B2B and B2C pricing software technology and advanced price optimization science,” said Bert Winemiller, President and CEO, PROS.  “With ever more industry leading manufacturing, distribution, services, and related companies gaining awareness of PROS and the powerful return on investment that PROS software provides, a growing number of companies are better positioned to remain profitable industry leaders as competitive opportunities arise and economics conditions improve.”

About PROS
PROS Holdings, Inc. (NYSE: PRO) is a leading provider of pricing and revenue optimization software products, specializing in price analytics, price execution and price optimization. By using our software products, our customers gain insight into their pricing strategies, identify detrimental pricing practices, optimize their pricing decision-making and improve their business processes and financial performance. PROS' software products incorporate advanced pricing science, which includes operations research, forecasting and statistics. PROS’ high performance software architecture supports real-time high volume transaction processing and allows PROS to handle the processing and database requirements of the most sophisticated and largest customers, including customers with hundreds of simultaneous users and sub-second electronic transactions. PROS provides professional services to configure our software products to meet the specific pricing needs of each customer. PROS has implemented over 200 solutions across a range of industries in more than 40 countries. Founded in 1985, PROS is headquartered in Houston, Texas. Today, PROS has over 300 employees, more than 100 with advanced degrees and 20 with Ph.D.s.

Forward-looking Statements
This press release contains forward-looking statements, including statements about the functionality of the PROS products and their ability to manage and forecast across an enterprise. The forward-looking statement contained in this press release are based upon PROS historical performance and its current plans, estimates and expectations and are not a representation that such plans, estimates or expectations will be achieved. Factors that could cause actual results to differ materially from those described herein include PROS ability to develop new products and product enhancements with the required functionality desired and PROS ability to implement and support successfully its products to the expectations of its customers.  Additional information relating to the uncertainty affecting the PROS business are contained in PROS filings with the Securities and Exchange Commission. These forward-looking statements represent PROS expectations as of the date of this press release. Subsequent events may cause these expectations to change, and PROS disclaims any obligations to update or alter these forward-looking statements in the future, whether as a result of new information, future events or otherwise.

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Media Contacts:
PROS
Corporate Communications
(713) 335-5197
CorpComm@prospricing.com