IBM Awards Its ClusterProven Mark To ACI Worldwide's Enterprise Payment System.

Business Editors & Technology Writers

OMAHA, Neb.--(BUSINESS WIRE)--Feb. 6, 2002

ACI Worldwide (Nasdaq:TSAI), a leading international provider of enterprise e-payment solutions, today announced that its ACI Enterprise Payment System(R) has been awarded the ClusterProven mark by IBM. The Enterprise Payment System is ACI's flagship electronic payments application for the IBM(a) Enterprise eServer(b) (S/390 and zSeries) platform.

The IBM ClusterProven program is designed to encourage the development of solutions that meet carefully defined technical and functional requirements for delivering the utmost in performance and reliability. The ClusterProven mark indicates that a solution has availability and scalability characteristics beyond those achieved on a single server node to help maintain application integrity in the event of a failure. IBM assists developers who wish to validate their solutions as ClusterProven.

The ACI Enterprise Payment System is an integrated e-payment processing engine that provides application software to acquire and authenticate, route, switch and authorize transactions, regardless of the channel in which they originate. Banks, retailers and e-payment processors can use the Enterprise Payment System to process transactions from any endpoint, including Internet shopping networks, mobile phones, Web ATMs and home banking systems. The software can also be used to upgrade legacy ATM and point-of-sale systems, adding support for new features such as smart card programs and electronic check processing.

"To succeed in today's competitive e-business market, financial services companies must deliver on the promise of 24/7 availability," said Morten Nygaard, director, eServer Marketing, Global Financial Services at IBM. "ClusterProven applications like the Enterprise Payment System running on the very stable IBM zSeries platform can help make that commitment a reality. In addition, this technology offers capacity on demand, when it is needed, where it is needed. IBM's leading clustering technology provides very high capacity utilization, and hence a lower cost of ownership."

The ACI Enterprise Payment System was designed for IBM's Enterprise Server platforms. The ACI software uses IBM's CICS Transaction Server for optimal throughput and is Parallel Sysplex Technology-enabled for absolute availability. The Enterprise Payment System enables customers to leverage their existing investments in IBM technology while gaining the flexibility to stay current with developments such as Parallel Sysplex.

"We continue to work to deliver best-of-breed e-payment solutions on IBM platforms, and IBM's recognition of our Enterprise Payment System as ClusterProven is another validation of our strategy," said Mark Vipond, president of ACI Worldwide. "Our e-payment applications combined with IBM's platforms provide a total solution for financial institutions who want to increase the efficiency of their systems and meet the technology needs of their customers."

ACI is a Premier Partner within IBM's PartnerWorld for Developers program. Together, ACI and IBM offer a full range of products and services to support large-scale transaction processing and e-business.

About ACI Worldwide

Every second of every day, consumers are initiating electronic payment transactions -- getting cash at ATMs, using debit and credit cards to make purchases in stores and on the Internet, banking by phone and PC, paying bills online. Twenty billion times a year, ACI software is used to process these transactions, powering the world's online payment systems. ACI was founded in 1975 and pioneered the development of applications and networking software for online transaction processing. Today more than 530 customers in 71 countries use ACI supplied software. Visit ACI Worldwide on the Internet at www.aciworldwide.com.

(a)IBM, the IBM e-business logo, z900, S/390, ClusterProven, CICS Transaction Server and Parallel Sysplex are all trademarks or registered trademarks of IBM Corporation.

(b)The IBM eServer brand consists of the established IBM e-business logo with the following descriptive term "server" following it.

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. Factors that could cause actual results to differ include but are not limited to the following.

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