Private company
S1 Corporation (United States)
American software company, 1994–2011
S1 Corporation was an American software company based in Norcross, Georgia, specialising in payment processing and financial services software for automated teller machines, retail point of sale and online banking applications, serving banks, retailers and credit unions. S1 Corporation was acquired by competing payment software company ACI Worldwide, Inc.2 Wikipedia text CC BY-SA 4.0
Last updated Oct 21, 2026.
Overview
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S1 Corporation was an American software company based in Norcross, Georgia, specialising in payment processing and financial services software for automated teller machines, retail point of sale and online banking applications, serving banks, retailers and credit unions. S1 Corporation was acquired by competing payment software company ACI Worldwide, Inc.2
Links
- WikipediaS1 Corporation
- WikidataQ7388215
Sources
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