Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for enforcing policies for computing devices. In some implementations, content for presentation by an electronic device is received. Context data indicating a current context of the electronic device is obtained. Policy data indicating a policy corresponding to at least one of the electronic device, a user of the electronic device, the content for presentation, or data associated with the content is accessed. The policy indicates one or more context-dependent limitations on presentation of the content by the electronic device. Presentation of the content by the electronic device is managed based on a set of actions the policy permits for the current context.