Cheetah Mobile Inc. is a holding company. The Company and its consolidated subsidiaries, variable interest entities (VIEs) and a VIE's subsidiary are engaged in the provision of online marketing services, Internet value-added services, and Internet security services and others. The Company operates a platform that offers mobile and personal computer (PC) applications for its users and global content promotional channels for its customers, both of which are powered by its cloud-based data analytics engines. For its users, its diversified suite of applications optimizes mobile and PC Internet system performance, and provides real time protection against known and unknown security threats. Its data analytics engines perform real time analysis of mobile applications, program files and Websites on their devices for behavior that may impair system performance or impose security risks.