Youdao Inc is a holding company principally engaged in the intelligent learning business, providing a variety of learning content, applications and solutions. The Company primarily operates its businesses through three segments. Learning Services segment mainly provides digital content services, science, technology, engineering, the arts and mathematics (STEAM) courses, and adult and vocational courses through the Youdao Lingshi, Youdao Literature, Youdao Premium Courses, NetEase Cloud Classroom and China University MOOC and others. Smart Devices segment mainly develops and offers smart devices, such as Youdao Dictionary Pen, Youdao Listening Pod, and Youdao Smart Learning Pad. The Company also provides education digitalization solutions, including Youdao Smart Learning Terminal, Youdao Smart Cloud, and Youdao Sports. Online Marketing Services segment mainly offers online marketing services, including performance-based advertising services and brand advertising services.