Houston, Texas – April 28, 2008 — PROS, a world leader in pricing and revenue optimization science and software, today announced another year of record participation at the 14th Annual PROS Summit.

“As the thought leader in real-time integrated pricing science, and a leading provider of pricing software products serving the most industries, PROS offers best practices to pricing practitioners,” said Jeff Robinson, Senior Vice President Pricing Solutions. “The extraordinary demand for trusted and high-quality information on price and revenue optimization shows growing executive interest in improving pricing while reinforcing PROS’ commitment to long-term partnerships in achieving pricing excellence.”

Discrete manufacturers, process manufacturers, distributors, services firms, and other industry leaders improve their profitability by choosing PROS as their partner. By attending the 14th Annual PROS Summit, executives with pricing responsibility gain access to this unique community of pricing practitioners with real-world experience in implementing real-time integrated science and pricing best practices through highly scalable and high-performance pricing optimization software.

Executives from a variety of backgrounds and industries from around the world offered the following feedback based on their experiences at the 14th Annual PROS Summit – 2008:

“Because the PROS people really are committed to help you with profitability it is not just pretty words!”

- S. America-Based Global Services & Distribution Executive

“I am an IT professional, new to pricing, and today has been a great opportunity / experience for me to learn about the pricing industry and how PROS is addressing and enhancing the role of pricing.”

- US-Based Global Heavy Equipment Manufacturing Executive

“Many golden take-aways!”

- Asia-Based Global Manufacturing Conglomerate Executive

“The conference further reinforces the value of a science-based approach to our pricing and revenue management activities.”

- Middle East-Based Global Travel & Transportation Executive

About the 14th Annual PROS Summit - 2008
The 14th Annual PROS Summit is the year’s largest, most respected, and most comprehensive event of the year dedicated to Pricing Excellence and Pricing Science. Held on April 20-23, 2008 at the Hilton Americas in Houston, Texas, this annual conference is the only open pricing optimization forum to address all of the critical topics in B2B and B2C pricing for the most diverse audience of industry executives. The 2008 Summit offers over 90 sessions in three days with topics targeted to industry-specific pricing problems. All attendees also have the option to participate in PROS-sanctioned professional certification programs before and after the main conference schedule. Featured event sponsors include Accenture, Microsoft, Oracle, eClerx, QL2, Infare Solutions, and SITA.

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.

MULTIMEDIA AVAILABLE: http://www.businesswire.com/cgi-bin/mmg.cgi?eid=5668729

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