ADVISORY/S1 Corporation Executive to Participate On `Software as a Service' Panel At CTO Forum 2002

Business Wire, April 3, 2002

News/Assignment Editors

ADVISORY...for Tuesday (April 9)

--(BUSINESS WIRE)

    Who:    S1 Corporation (Nasdaq: SONE), a leading global provider
            of Enterprise eFinance solutions

    What:   CTO Forum 2002
            "Software as a Service" Panel Discussion

    Where:  Westin St. Francis Hotel, San Francisco, California

    When:   Tuesday, April 9, 2002 from 10:30 - 11:30 a.m. PST

As part of a panel of industry experts assembled for InfoWorld's third annual CTO Forum, Imad Mouline, chief technology officer for S1 Corporation, will examine the use of Web Services to improve customer interaction, from offering additional value through integration of applications to gaining a deeper understanding of consumer needs and wants. Mouline will share his perspective on how companies and their partners can collaborate using component-based services and customized software solutions to suit their business needs, and leverage his technological expertise to answer questions regarding implementation, challenges using Web services and the business practices to overcome those hurdles.

Michael Vizard, editor-in-chief of InfoWorld Media Group, will lead the panel of technology luminaries into a thorough discussion of the evolution of Web- and Internet-enabled software services, and determine the impact on installed-based software packages and fixed business processes.

Mouline is responsible for working with the development and product management teams to drive the technology direction and execution of S1's integrated delivery channel management strategy and global applications. Prior to joining S1, Mouline served as director of technology at BroadVision, where he coordinated the technology strategy across the company's engineering groups, helped shape the direction and architecture of its future products and explored new technologies for multi-channel delivery. Prior to BroadVision, he spent seven years at Interleaf, Inc. where he held the position of director of engineering, in charge of cross-product architecture. He also was the principal architect of Interleaf's XML-based Enterprise Content Management flagship product and served as principal consultant in Professional Services. Mouline is a graduate of the Massachusetts Institute of Technology.

For more information: Tracey Frederickson, Sterling Hager, Inc., 617-926-6665 ext. 241.

About InfoWorld CTO Forum

The third annual InfoWorld CTO Forum 2002 is an exclusive, invitation-only event for 250 CTOs and high-level executives. The industry's best and brightest minds will convene in an interactive peer-to-peer setting. The InfoWorld CTO Forum 2002 takes place at the Westin St. Francis Hotel in San Francisco on April 8 - 10, 2002, for three days of networking, keynotes, panels, practical discussions and working sessions.

About S1 Corporation

S1 (Nasdaq: SONE) is a leading global provider to more than 3,700 banks, credit unions, insurance providers, and investment firms of Enterprise software solutions that turn customer interactions into profits. S1's Enterprise eFinance solutions deliver a transactionable, customer-centric view across all delivery channels, resulting in a more compelling experience for the customers and a more profitable relationship for the financial institution. S1 is the only eFinance provider with the proven experience, breadth of products, and financial strength to empower financial services companies' Enterprise eFinance strategy. Additional information about S1 is available at www.s1.com.