1) The document discusses various Firebase services including Analytics, Remote Config, Authentication, Notifications, Dynamic Links, App Indexing, and Crash Reporting that provide analytics, crash reporting, A/B testing, authentication and more for mobile and web apps.
2) Firebase Analytics provides analytics and user segmentation capabilities while Firebase Remote Config enables A/B testing without requiring app deployments.
3) Other services covered include Firebase Authentication, Notifications, Dynamic Links, and Crash Reporting which provide user authentication, push notifications, dynamic link handling, and crash reporting, respectively.