ACI Expands Reach in Latin America with Optimisa S.A.

ACI Worldwide Designates Specialized Integrator as Distributor for Chilean Market

(Omaha, Neb. – 21 February 2006) – ACI Worldwide (NASDAQ: TSAI), a leading international provider of enterprise payment solutions, today announced an agreement with Optimisa S.A. to serve as ACI’s distributor within the Chilean market. Optimisa, a systems integrator specialized in critical systems, exemplifies ACI’s commitment to the Chilean market by providing localized distribution and support of ACI’s entire portfolio of world class payment solutions.

“We chose Optimisa because of its experience in the Chilean market and the quality of their execution and support,” said Lyle Knox, Vice President and Managing Director, ACI Latin American Operations. “ACI now has local support for our existing and emerging products, ensuring continuity for our customers in Chile.”

ACI software runs the three bank-owned ATM networks in Chile and the only bank-owned POS acquiring network. The stability and growth of the Chilean economy, as well as the aggressive expansion of its retail sector provide many opportunities for the ACI product set to expand its presence among its traditional banking customers and in other sectors of the Chilean market.

“This agreement expands our capacity to deliver mission critical solutions to our customers and allows us to continually support our customers as their businesses continue to evolve,” said Alfredo Piquer, chairman of the board, Optimisa.

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