ACI Worldwide develops, markets, and installs a portfolio of software products primarily focused on facilitating electronic payments. The firm also leverages its distribution network in the Americas; Europe, the Middle East, and Africa, or EMEA; and Asia-Pacific regions to sell software developed by third parties. ACI software products process payment transactions for retail banking clients, billers such as utilities and healthcare providers, and community banks and credit unions. ACI's customers are financial institutions all over the world, but most of the revenue is generated in the United States and EMEA regions.