C3.ai is a software company that provides a platform as a service (PaaS) for the rapid design, development, and deployment of enterprise-scale big data, predictive analytics, AI, and IoT applications. The company's platform enables data scientists, software developers, and business analysts to develop, deploy, and operate large-scale AI, predictive analytics, and IoT applications. C3.ai's platform is used by companies in various industries, including aerospace and defense, healthcare, manufacturing, oil and gas, and utilities. The company was founded in 2009 by Thomas M. Siebel and is headquartered in Redwood City, California.