"We work with ad partners, including advertisers on our platform and entities that belong to the Google group of companies, in order to show you more relevant and useful ads based on your Waze activity and information associated with your device's identifier (i.e, Advertising identifiers or similar technologies) shared with us by our ad partners. Waze may also share personal information with companies or organizations connected or affiliated with Waze, such as subsidiaries, sister-companies and parent companies (i.e. entities that belong to the Google group of companies)."
Waze uses advertising IDs to link user activity across Waze, Google services, and third-party ad partners, enabling cross-service user profiling within the Google ecosystem.