The Norcross, Ga., vendor S1 Corp. said Zions Bancorp. of Salt Lake City has agreed to use its corporate banking software.

Zions has been a customer of S1's Enterprise line since 2002. The banking company uses personal, business, call center, and sales and service products from that line, as well as a teller product from S1's FSB Solutions division.

"Zions and S1 have a long, successful relationship in the consumer, small business, and branch space," Fred Dumas, the general manager for S1's treasury online group, said Wednesday in a press release.