Altair Engineering Inc. is engaged in computational intelligence that provides software and cloud solutions in simulation, high-performance computing (HPC), data analytics and artificial intelligence (AI). The Company operates through two segments: Software and Client Engineering Services. The 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, Internet of Things (IoT) platform and analytics tools, as well as support and the complementary software products it offers through its Altair Partner Alliance (APA). Its Client Engineering Services segment provides client engineering services to support its customers. It operates LED lighting business through its wholly owned subsidiary, Toggled.