Aspen Technology Inc provides process optimization software for companies in the energy, chemicals, engineering, and construction industries. Its products are designed to manage process design, operational performance, and supply chain planning. The firm has two business segments: subscription/software and services. The subscription and software segment generates most of its revenue from licenses for the firm's flagship aspenONE software. The services segment generates revenue by providing training and professional services to customers focused on implementing Aspen’s technology. The firm has clients all over the world, but over half of the firm's revenue is generated in the United States and Europe.