TORONTO, ONTARIO -- (MARKET WIRE) -- 03/14/08 -- Trapeze Software Inc. ("Trapeze"), a subsidiary of Constellation Software Inc. (TSX: CSU) and a provider of intelligent transportation systems (ITS) and mobile technologies is pleased to announce that it has signed a significant contract with the City of Edmonton, Alberta for provision of a comprehensive, integrated demand response solution.

The Trapeze solution for the City's Edmonton Transit System includes an advanced scheduling and dispatch system designed to support the Disabled Adult Transit Service (DATS). Leveraging Edmonton's existing Greyhawk mobile data terminals, the system is enabled with two-way data messaging capabilities and GPS data communication to provide real-time vehicle positioning and schedule adherence information.

The new enterprise solution selected by the City of Edmonton also includes Trapeze technology for client certification, customer relationship management and a comprehensive workforce management solution for employee bidding, dispatch, yard management, timekeeping and online employee information.

Edmonton Transit System has been providing public transportation service in the Edmonton area since 1908 and is celebrating its 100th anniversary this year.

About Trapeze Software

Trapeze delivers solutions that consider the full 360 degrees of passenger transport. Whether addressing the needs of a single department, an entire organization, or the community, Trapeze provides some of the most advanced software, intelligent transportation systems (ITS) and mobile technologies in the industry. Hundreds of government and commercial organizations across North America, Europe and Asia Pacific have turned to Trapeze to realize efficiencies, enhance the quality and scope of their services, and safely transport more people with less cost. For further information on Trapeze Software Inc., please visit http://www.trapezegroup.com, or call 905-629-5297.

About Constellation Software Inc.

Constellation Software Inc.'s common shares are listed on the Toronto Stock Exchange under the symbol "CSU". Constellation is an international provider of market leading software and services to a number of industries across both the public and private sectors. The Company acquires, manages and builds vertical market software businesses that provide mission-critical software solutions to address the specific needs of its customers in those industries.

Forward Looking Statements

Certain statements herein may be "forward looking" statements that involve known and unknown risks, uncertainties and other factors that may cause the actual results, performance or achievements of Constellation or the industry to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. These statements reflect current assumptions and expectations regarding future events and operating performance and speak only as of the date hereof. Forward looking statements involve significant risks and uncertainties, should not be read as guarantees of future performance or results, and will not necessarily be accurate indications of whether or not such results will be achieved. A number of factors could cause actual results to vary significantly from the results discussed in the forward looking statements. These forward looking statements are made as of the date hereof and Constellation assumes no obligation to update any forward looking statements to reflect new events or circumstances.

Contacts:
Constellation Software Inc.
John Billowits
Chief Financial Officer
(416) 861-2279
Email: info@csisoftware.com