ACI Worldwide, Inc. engages in the development, marketing, installation, and support of software products and solutions primarily focused on facilitating real-time electronic payments. The company is headquartered in Elkhorn, Nebraska and currently employs 3,103 full-time employees. The firm's segments include Payment Software and Biller. Its Payment Software segment drives payments orchestration for banks and merchants. The company provides payment solutions to large and mid-size banks globally for retail banking, digital, and other payment services. Its support of merchants globally includes Tier 1 and Tier 2 merchants (in-store and online), payment service providers, independent selling organizations, value-added resellers, and acquirers who service them. The firm's Biller segment provides electronic bill presentment and payment services to companies operating in the consumer finance, insurance, healthcare, higher education, utility, government, mortgage, subscription provider, and telecommunications categories. The firm also provides fraud abuse protection to its Biller customers.