ACI Worldwide Receives Best-of-Class Awards From Aite Group.

Awards Recognize Cash Management Solution

OMAHA, Neb. -- ACI Worldwide (NASDAQ: TSAI), a leading international provider of software for electronic payment systems, has been awarded four best-of-class awards by Aite Group in their recent cash management report, "Evaluating the Leading Providers of Cash Management Technologies: New Strategies and a Changing Competitive Landscape." ACI's online banking solution, ACI Enterprise Banker([TM]), was recognized as best-in-class in the following categories: Most Large and Mid-Size Bank Deployments, Greatest Depth of Functionality, Best New Release of a Solution, and Most Innovative New Product Feature. The awards are based on client references, market perceptions, vendor responses on questionnaires, product demonstrations and Aite Group's knowledge of the market. ACI garnered the most awards of any participating cash management solution provider which included other industry participants such as Fundtech, S1 and Bottomline Technologies.

"We are pleased to recognize ACI with four best-in-class awards for the ACI Enterprise Banker solution," said Christine Barry, research director for Aite Group. "With its acquisition of P&H Solutions, ACI Worldwide is a consistent leader in the cash management space. ACI Enterprise Banker has been implemented at more large and mid-sized banks than any other vendor solution. Banks are drawn to Enterprise Banker's depth of functionality and superior entitlements capabilities."

In addition to evaluating the leading solutions in the cash management marketplace, the report identifies five key strategies vendors have adopted in response to industry changes. According to the report, these strategies are dominating the cash management industry and have been developed to meet greater bank demands for broader product portfolios, deeper functionality, and greater financial viability. Aite Group has named ACI as a leader in implementing its strategies for end-to-end integration, product innovation, and overseas growth.

"We are honored that Aite Group has recognized Enterprise Banker with four best-in-class awards, more than any other vendor solution," said Ralph Dangelmaier, president of the wholesale banking group at ACI. "ACI has worked diligently to develop innovative product modules that deliver robust functionality for our customers. As a result, we have achieved significant momentum in our ability to serve the needs of banks across markets. We were also pleased that Aite Group has named ACI as a leader in our strategic commitment to establishing end-to-end integration, promoting product innovation, and expanding growth overseas."

About Aite Group

Aite Group is a leading independent research and advisory firm focused on business, technology, and regulatory issues and their impact on the financial services industry. It was founded by leading industry experts in Banking and Securities & Investments. Aite Group brings together a team of business strategy, technology, and regulatory experts to deliver comprehensive, timely, and actionable advice to financial institutions and technology vendors. Aite Group seeks to become a true partner, advisor, and catalyst by exchanging ideas and challenging basic assumptions to ensure that its clients always stay one step ahead of the competition.

About ACI Worldwide

Every second of every day, ACI solutions are at work processing electronic payments, managing risk, automating back office systems, and providing application infrastructure services. Founded in 1975, ACI is a leading international provider of solutions for consumer and wholesale banking, retail, and cross-industry systems. ACI serves more than 800 customers in 84 countries including many of the world's largest financial institutions, retailers, and payment processors. Visit ACI Worldwide on the Internet at www.aciworldwide.com.

Any statements in this press release regarding projected results are preliminary and "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. In addition, this press release may contain other forward-looking statements including statements regarding Transaction Systems Architects, Inc.'s ("TSA"), its subsidiaries or third parties' expectations, predictions, views, opportunities, plans, strategies, beliefs, and statements of similar effect. The forward-looking statements in this press release are subject to a variety of risks and uncertainties. Actual results could differ materially.

For a detailed discussion of these and other risk factors, interested parties should review the Company's filings with the Securities and Exchange Commission, including the Company's Form 10-K filed on May 11, 2007.