What are firebase functions? Firebase Cloud Functions in particular are like Lego blocks that you can connect to any Firebase service. For example, a function can be triggered when an image is uploaded to Firebase Storage to create a thumbnail, or maybe clean some user data when a node is deleted in the Realtime Database.What is firebase cloud function? Cloud Functions for Firebase is a serverless framework that lets you automatically run backend code in response to events triggered by Firebase features and HTTPS requests. ... Learn more about how Firebase fits into the picture.How do you call a function in firebase? Follow the instructions to add Firebase to your Android app. Using the Firebase Android BoM, declare the dependency for the Cloud Functions Android library in your module (app-level) Gradle file (usually app/build. gradle ). dependencies { // Import the BoM for the Firebase platform.