Press Release

Transaction Systems Architects To Present At Stephens Inc Spring Investment Conference

(New York, NY. — June 5, 2007) — Transaction Systems Architects, Inc. (Nasdaq: TSAI), today announced that the Company will present at the Stephens Inc. Spring Investment Conference in New York, on Thursday, June 7, 2007. Philip G. Heasley, CEO, Henry C. Lyons, CFO, and Jeffrey S. Hale, Chief Marketing Officer will be the guest speakers.

The presentation will be web cast by Wall Street Webcasting at 10:10 a.m. (EDT) and interested persons may access a real-time broadcast at: www.tsainc.com/investors.

About Transaction Systems Architects, Inc. 

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