ACI Worldwide, Inc. engages in the development, marketing, installation, and support of software products and solutions primarily focused on facilitating real-time electronic payments. It operates through the following segments: ACI on Premise, ACI on Demand, and Corporate and Other. Read More The ACI on Premise segment serves customers who manage their software on site. The ACI on Demand segment covers the needs of banks, financial intermediaries, merchants, and corporates who use payments to facilitate their core business. The Corporate and Other segment consists of the corporate overhead costs. The company was founded in 1975 and is headquartered in Naples, FL.