Firebase App
↔ cloud apps run on Firebase & individually connect to Firebase Project
References
AppID
↔ UID for Firebase App, platform-specific, autogenfirebase/app
↔ Firebase SDK to init Firebase AppinitializeApp()
↔ getter to init Firebase App instance via config object to connect to Firebase BackendFirebase Authorization
↔ to specify rules per file/path to authorize access to files in Firebase App