Cloud Functions for Firebase

A serverless framework that executes backend logic automatically in response to Firebase events and HTTPS requests.

Deploy Node.js or Python code directly to Google infrastructure without managing a single server. The platform scales automatically (handling spikes like a 10,000-user login surge) and triggers logic based on specific events: a new document in Cloud Firestore, a file upload to Cloud Storage, or a user deletion in Firebase Auth. You pay only for the 100ms execution increments you actually use. It is the standard way to handle heavy lifting like image processing, sending FCM notifications, or securing Stripe payment flows without exposing sensitive keys to the client.

https://firebase.google.com/docs/functions