ACI Worldwide, Inc. develops, markets, installs, and supports software products and services for facilitating electronic payments in the United States and internationally. It operates through Banks, Merchants, and Billers segments. The company offers ACI Acquiring, a solution to process credit, debit, and prepaid card transactions, deliver digital innovation, enhance fraud prevention, and reduce interchange fees; ACI Issuing, a digital payment issuing solution; and ACI Enterprise Payments Platform to provide payment players payment processing and orchestration for digital payments. It also provides account-to-account payments to support processing for banks and intermediaries, as well as regulatory compliance. In addition, the company offers ACI Payments Orchestration Platform, an omnichannel payments platform that orchestrates and optimizes payments; ACI Fraud Management for merchants, billers, and financial institutions, as well as ACI Fraud Scoring Services with artificial and human insights with data intelligence; and ACI Speedpay, an integrated suite of digital billing, payment, disbursement, and communication services. It offers electronic bill presentment and payment services to consumer finance, insurance, healthcare, higher education, utility, government, subscription provider, telecommunications, and mortgage sectors; product installations and configurations, and custom software modifications; and business and technical consultancy, on-site support, product education, and testing services, as well as distributes or acts as a sales agent for software developed by third parties. The company markets its products and services under the ACI Worldwide brand. The company was formerly known as Transaction Systems Architects, Inc. and changed its name to ACI Worldwide, Inc. in July 2007. The company was founded in 1975 and is headquartered in Elkhorn, Nebraska.