Baseline Profiles — not to be confused with Android Baseline profiles — are Android Runtime profiles that guide ahead-of-time compilation. They're created once per release on a development machine and are shipped with the application, making them available faster than relying on Cloud Profiles, an older, related technology. The run time uses the Baseline Profile in an app or library to optimize important code paths, which improves the experience for new and existing users when the app is downloaded or updated. Creating Baseline Profiles is relatively straightforward and can lead to significant (up to 30%) performance boosts according to its documentation.