Aspen Technology, Inc., together with its subsidiaries, provides mission-critical process optimization software solutions in the United States, Europe, and internationally. It operates through two segments, Subscription and Software, and Services. The company provides a suite of aspenONE software applications for use in the areas of engineering, manufacturing, and supply chain. Its aspenONE engineering software products include Aspen HYSYS software for the design and optimization of hydrocarbon processes; Aspen Plus software for the design and optimization of chemical processes; Aspen Economic Evaluation software for estimating costs of project capital costs and lifecycle asset economics; Aspen Exchanger Design and Rating software used to design, simulate, and rate various types of heat exchangers; and Aspen Basic Engineering, a process engineering platform for producing front-end design deliverables. The company’s aspenONE manufacturing software products comprise Aspen DMCplus, a multi-variable controller software for maintaining processes at their optimal operating point under changing process conditions; and Aspen Info Plus.21, a data historian software that stores data for analysis. Its aspenONE supply chain software products include Aspen PIMS, Aspen Petroleum Scheduler, Aspen Petroleum Supply Chain Planner, Aspen Collaborative Demand Manager, Aspen Fleet Optimizer, Aspen Supply Planner, and Aspen Plant Scheduler software products, which enable process manufacturers to reduce inventory levels, improve asset efficiency, and optimize supply chain operations. The company also offers software maintenance and support, professional, and training services. It serves customers in the process industries, such as energy, chemicals, engineering, and construction, as well as consumer packaged goods, power, metals and mining, pulp and paper, pharmaceuticals, and biofuels. Aspen Technology, Inc. was founded in 1981 and is headquartered in Bedford, Massachusetts.