> Activity history helps keep track of the things you do on your device, such as the apps and services you use, the files you open, and the websites you browse. Your activity history is stored locally on your device when using different apps and features such as Microsoft Edge, some Microsoft Store apps, and Office apps.
> If you've signed in to your device with a Microsoft account and given your permission, Windows sends your activity history to Microsoft. Once your activity history is in the cloud, Microsoft uses that data to enable cross-device experiences, to provide you with the ability to continue those activities on other devices, to provide personalized experiences (such as ordering your activities based on duration of use) and relevant suggestions (such as anticipating what your needs might be based on your activity history), and to help improve Microsoft products.