"Online activity data, such as information about your use of and actions on the App and the Sites, including pages or screens you viewed, how long you spent on a page or screen, navigation paths between pages or screens... Our service providers and certain third parties (e.g., online advertising networks and their clients) also may collect this type of information over time and across third-party websites and mobile applications. This information may be collected on our Site using cookies, browser web storage (also known as locally stored objects, or "LSOs"), web beacons, and similar technologies."
Third-party advertising networks collect user activity data across websites and mobile apps over time, using cookies, web beacons, advertising IDs (Google AAID, Apple IDFA), and SDKs to build cross-service profiles.