This question asks you to identify the metrics that can be used to assess the effectiveness of Google Maps. Your response should emphasize key performance indicators (KPIs) that align with both customer needs and Google's business goals, specifically related to the functionality and performance of Google Maps. Evaluate functionality across several categories: a) User experience: App downloads, active users, session duration, bounce rates, user reviews, and ratings. b) Application performance: App availability, load times, error rates, navigation precision, and accuracy of traffic data. c) Customer Success: User retention rates, map data inquiries, route requests, interactions with local businesses, and usage of additional features like street view, among others. d) Revenue generation: Income from advertising, the number of partnerships, and utilization of premium features, etc.