Altair Engineering Inc. is a computational science and artificial intelligence company. It provides software and cloud solutions in simulation, high-performance computing (HPC), data analytics and artificial intelligence (AI). It operates through two segments: Software and Client Engineering Services. Software segment includes software, software services, and software-related services. The software component of this segment includes its portfolio of software products, including its solvers and optimization technology products, HPC software applications and hardware products, modeling and visualization tools, data analytics and analysis products. Client Engineering Services segment provides client engineering services to support its customers with long-term, ongoing expertise. Its solution, FlightStream, provides computational fluid dynamics (CFD) software with a footprint in the aerospace and defense sectors. It also offers strategic consulting and training in AI and data analytics.